The QUALITY-FIRST Standard = Decades and Thousands of Miles Ahead of The Competition

 

Any Type ( Gasoline, Diesel or Natural Gas Powered ) Vehicle or Equipment MAXIMUM Life Cycle Synthetic Extended Oil Change Drain Interval Motor and Engine Oils.

Rome Georgia, Cherokee County, Fort Payne and Gadsden Alabama Wholesale Factory Direct QUALITY-FIRST Synthetic Motor Oils and Lubricants

Maximum Synthetic Oil Change Drain Intervals  Technical Innovation and Business Foresight • Inspired by Aerospace Technology

“The First in Synthetics”®   Devoted to Protection™ since 1972

Solve or Eliminate Some Costly and Time-Intensive Maintenance Procedures  Solve or Eliminate Some Costly and Time-Intensive Vehicle and Equipment Maintenance Procedures - MINIMIZE Wear and You MAXIMIZE Reliability and Productivity  MINIMIZE Wear and You MAXIMIZE Reliability and Productivity

“The First in Synthetics”® Devoted to Protection™ since 1972. Expanding the boundaries of lubrication science and redefining the performance possibilities of engines, equipment and machinery in automotive, commercial and industrial applications since 1972.  Expanding the boundaries of lubrication science and redefining the performance possibilities of engines, equipment and machinery in automotive, commercial and industrial applications since 1972.

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Down or Out of Service Time REDUCE Equipment Down or Out of Service Time     

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Lubricant Inventory Requirements REDUCE Lubricant Inventory Requirements

“The First in Synthetics”® ELIMINATE Fleet Vehicle and Equipment Premature Equipment Failures ELIMINATE Premature Equipment Failures

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Fuel and Energy Consumption REDUCE Fuel and Energy Consumption

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Hazardous Waste Lubricants REDUCE Hazardous Waste Lubricants

“The First in Synthetics”® STREAMLINE Fleet Vehicle and Equipment Maintenance Protocols STREAMLINE Maintenance Protocols

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Waste Disposal Expenses REDUCE Waste Disposal Expenses

“The First in Synthetics”® MAXIMIZE Fleet Vehicle and Equipment Service Life MAXIMIZE Equipment Service Life

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Maintenance Man Hour Requirements REDUCE Man Hour Requirements

“The First in Synthetics”® EXTEND Fleet Vehicle and Equipment Lubricant Drain Intervals EXTEND Lubricant Drain Intervals

“The First in Synthetics”® REDUCE Fleet Vehicle and Equipment Capital Expenditures REDUCE Capital Expenditures

“The First in Synthetics”® INCREASE Fleet Vehicle and Equipment Production INCREASE Production

Rome Georgia, Cherokee County, Fort Payne and Gadsden Alabama Fleet Vehicle and Equipment Synthetic Motor Oils and Lubricants Maintenance Products

While many technological advances occur in an evolutionary manner, occasionally a revolutionary technology appears on the horizon that creates startling new conditions and profound changes. At the heart of every successful business venture you'll find two things: technical innovation and business foresight.

Award-winning jet fighter pilot and Squadron Commander, Lieutenant Colonel A.J. Award-winning jet fighter pilot and Squadron Commander, Lieutenant Colonel A.J. "Al" Amatuzio gained a solid appreciation for the extraordinary benefits of the lubricants that protected the engines of the jets he flew.

WHY does every Jet Fighter Engine in The World use SYNTHETIC Lubricants Exclusively?

  Because of three extraordinary high-performance characteristics...

1.   With an ability to  reduce friction and wear on engine components 

2.   With an ability to  function dependably at severe temperature extremes 

3.   With an ability to  withstand rigorous and lengthy engine operation without chemical breakdown 

He was impressed by the superb hi-performance and protection that only synthetic lubricants, could stand up to the "extreme" heat and cold temperatures and high rpm performance operating conditions of jet fighter engines.

He knew also that the same outstanding performance benefits synthetic lubricants provide for jet engines would prove invaluable to car, truck and other internal combustion engines. Al Amatuzio began an intense period of research in 1963. He assembled the industry's most knowledgeable chemists, and by 1966 his newly formulated synthetic motor oil was being sold commercially. Throughout the 1960s Amatuzio continued his research and developed commercially available synthetic oils under a variety of names.

Rome Georgia Factory Direct QUALITY-FIRST Fuel Efficient Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Max Synthetic Oil Change Drain Intervals  Since 1972 The Highest Professional and Ethical Standards • Where QUALITY-FIRST is The Rule, NOT the Exception

This man changed automotive lubrication history in 1972“When someone starts a new company and risks everything to its success, they better be sure they have a better mousetrap. I have always been driven to be the best. I would never have started this company with a second rate product because doing so would have gone against my nature. There was no doubt in my mind that our Synthetic Motor Oil was superior to anything and everything on the market at that time. Armed with that knowledge and a determination to succeed, I made the commitment of a lifetime and have never regretted it. Everything about this company reflects what I believe important and necessary for a high quality company to be.

A.J. "Al" Amatuzio

His Philosophy: "I take pride in never having conformed to industry norms or standards when these standards are contrary to peak performance." Formulating for peak performance, in his book, includes the single measure that consumers can understand and act on -- longer "extended oil change drain intervals" without sacrificing protection.

  In 1994 Al Amatuzio gained the ultimate recognition as the pioneer in the automotive synthetic lubricant industry with his induction into The Lubricants World Hall of Fame. He is firmly established among the giants who have shaped the industry.

Fort Payne Alabama Factory Direct QUALITY-FIRST Fuel Efficient Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Maximum Synthetic Oil Change Drain Intervals  A Commitment to Excellence in Synthetic Lubrication since 1972

A Documented History of Innovation and Leadership

The Company of FIRSTs on the Leading Edge of Technology

Introducing many new products that were the first of their kind.

A check list of revolutionary products that have withstood the test of time.


  • 1972 In 1972 “The First in Synthetics”® FIRST to develop an API-rated 100 percent synthetic motor oil ( 10W-40 ). FIRST to   develop an API-rated 100 percent synthetic motor oil ( 10W-40 ).
  • 1972 In 1972 “The First in Synthetics”® FIRST to introduce the concept of “Extended Oil Change Drain Intervals” ( 25,000-Miles ). FIRST to   introduce the concept of "Extended Oil Change Drain Intervals" ( 25,000-Miles ).
  • In 1972 his 10W-40 became the FIRST synthetic motor oil in the world to meet American Petroleum Institute (API) automotive service requirements  In 1972 his 10W-40 became the FIRST synthetic motor oil in the world to meet American Petroleum Institute (API) automotive service requirements setting all-new standards for motor oil quality, and went a step further introducing the concept of extended oil change drain intervals (Because in 1972 the oil was also capable of performing for 25,000-mile "extended oil change drain intervals", and it was the right thing to do for the consumer all while maintaining and providing long-term performance, wear protection and fuel economy, keeping engines clean and deposit-free, providing cold weather starts and protecting against rust and corrosion). And as they say the rest is history. With that the Automotive Synthetic Lubricant Industry was born.

  • 1972 In 1972 “The First in Synthetics”® FIRST to introduce synthetic oils that legitimately contribute to improving fuel efficiency. FIRST to   introduce synthetic oils that legitimately contribute to improving fuel efficiency.
  • 1973 In 1973 “The First in Synthetics”® FIRST to manufacture a synthetic 2-cycle oil ( 100:1 pre-mix ). FIRST to   manufacture a synthetic 2-cycle oil ( 100:1 pre-mix ).
  • 1974 In 1974 “The First in Synthetics”® FIRST to manufacture synthetic gear lube for automotive use ( 80W-90 ). FIRST to   manufacture synthetic gear lube for automotive use ( 80W-90 ).
  • 1975 In 1975 “The First in Synthetics”® FIRST to produce synthetic motor oils for diesel engines ( SE, CC, CD ). FIRST to   produce synthetic motor oils for diesel engines ( SE, CC, CD ).
  • 1978 In 1978 “The First in Synthetics”® FIRST to produce synthetic motor oils for racing engines ( 20W-50 ). FIRST to   produce synthetic motor oils for racing engines ( 20W-50 ).
  • 1980 In 1980 “The First in Synthetics”® FIRST to manufacture a synthetic automatic transmission fluid (ATF) for automotive use. FIRST to   manufacture a synthetic automatic transmission fluid (ATF) for automotive use.
  • 1982 In 1982 “The First in Synthetics”® FIRST to produce synthetic motor oils for marine engines ( 15W-40 ). FIRST to   produce synthetic motor oils for marine engines ( 15W-40 ).
  • 1984 In 1984 “The First in Synthetics”® FIRST to produce synthetic motor oils for turbo engines ( 10W-30 ). FIRST to   produce synthetic motor oils for turbo engines ( 10W-30 ).
  • 2005 In 1984 “The First in Synthetics”® FIRST to manufacture a full-synthetic advanced Ultra-Fine NanoFiber Technology cartridge-style oil filter. FIRST to   manufacture a full-synthetic advanced Ultra-Fine NanoFiber Technology cartridge-style oil filter.

Our Product QUALITY is Our Reputation since 1972

Holding ourselves to higher quality-first standards is our trademark.

We select raw materials based on quality and performance, not price.

The Quality-FIRSTStandard since 1972
“The First in Synthetics”® since 1972

Decades and Thousands of Miles Ahead of The Competition


"Our company makes the best lubricants in the world, period, and challenges anyone or any company to prove us wrong! That won't happen because our competitors know it's true." "We do things with our products that other companies won't do or don't have the expertise to do." "We don't make "minimum standard" products. We never have."

A. J. Amatuzio, President and CEO of AMSOIL, Inc.

From the President's Desk ( Action News Magazine Issue 2003-01 Page # 2 )

So how do we tell the AMSOIL story?

When I think of the AMSOIL story I think of the word "Before". . .

Before AMSOIL, there was no API rated synthetic motor oil. Before AMSOIL, there was no API rated synthetic motor oil.

Before other oil companies “discovered” synthetic motor oil, AMSOIL already had the first motor oils on the market for years. Before other oil companies "discovered" synthetic motor oil, AMSOIL already had the first motor oils on the market for years.

Before “fill for life” became an industry buzzword AMSOIL was filling for life. Before "fill for life" became an industry buzzword AMSOIL was filling for life.

Before specification GM4718M (Corvette) for General Motors synthetic factory fill was required, AMSOIL was already meeting the spec and making the grade. Before specification GM4718M (Corvette) for General Motors synthetic factory fill was required, AMSOIL was already meeting the spec and making the grade.

Before OEM's began extending drain intervals, AMSOIL was extending automotive drains to 25,000 miles and over-the-road diesels to many tens of thousands of miles. Before OEM's began extending drain intervals, AMSOIL was extending automotive drains to 25,000 miles and over-the-road diesels to many tens of thousands of miles.

Before other oil manufactures were even concerned with volatility, AMSOIL was using and passing the NOACK Volatility Test to insure the highest quality, longest lasting motor oils. (In 1980 AMSOIL had the first NOACK test equipment in the U.S.) Before other oil manufactures were even concerned with volatility, AMSOIL was using and passing the NOACK Volatility Test to insure the highest quality, longest lasting motor oils. (In 1980 AMSOIL had the first NOACK test equipment in the U.S.)

Before improving engine performance was considered a goal of the other motor oil companies, it had been an accomplished fact with AMSOIL for many years. Before improving engine performance was considered a goal of the other motor oil companies, it had been an accomplished fact with AMSOIL for many years.

Before auto makers periodically increased the demands on motor oils, AMSOIL was meeting and exceeding those demands without reformulating. Before auto makers periodically increased the demands on motor oils, AMSOIL was meeting and exceeding those demands without reformulating.

Before the rest of the industry understands what the lubrication performance challenges of today are, AMSOIL has already met those challenges. Before the rest of the industry understands what the lubrication performance challenges of today are, AMSOIL has already met those challenges.

That's the AMSOIL story! And that's the way I like to tell it.

We have been copied and imitated for over forty years, and we have thrived because our products have always been superior. We have been copied and imitated for over forty years, and we have thrived because our products have always been superior.

The Bottom Line: Our competitors have been formulating their oils to run at normal drain intervals while we have been formulating for 25,000-mile and beyond extended oil change drain intervals since 1972, and there in lies the difference. Their oils don't have to be as good as ours, so they are not.

"No other oil company is going to make a better extended oil change drain interval motor oil than we make, period." They won't because they don't have the formulating expertise and experience that we have and they won't because they will formulate down to a price rather than up to our quality-first standards. It is more expensive to make the best oil on the market, and they will not cut into their profit margins to do it.  It is more expensive to make the best oil on the market, and they will not cut into their profit margins to do it.

FOOTNOTE: From the introduction of its First API-rated 100% Synthetic Motor Oil in 1972, AMSOIL has made it necessary for other oil companies to improve their products or fall behind.

Gadsden Alabama Factory Direct QUALITY-FIRST Fuel Efficient Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Max Synthetic Oil Change Drain Intervals  “The First in Synthetics”® Devoted to Protection™ since 1972 • Decades and Thousands of Miles Ahead of The Competition

AMSOIL Beats Mobil 1® and Royal Purple® in Industry-Standard Testing

Posted on August 18th, 2016 8:57 am

Another example of competitors formulating to the minimum standard requirements.

5W-30 Thermo-Oxidation Engine Oil Simulation Test ResultsAMSOIL Signature Series 5W-30 Synthetic Motor Oil protects against harmful deposits on turbochargers 4X better than Mobil 1 Extended Performance and 3.6X better than Royal Purple in industry-standard testing.*

Signature Series 5W-30 Synthetic Motor Oil was tested against both oils to determine which provides the greatest level of protection against deposit formation in high-heat applications.

The TEOST (Thermo-Oxidation Engine Oil Simulation Test) 33C test (ASTM D6335) is an industry-standard bench test that teost simulates turbocharger operating conditions.  To meet the API SN Resource Conserving and ILSAC GF-5 motor oil specifications that are often recommended by vehicle manufacturers, a 5W-30 motor oil must limit total deposit formation to 30 mg or less.

AMSOIL Signature Series 5W-30 Synthetic Motor Oil held the total weight of deposits to 7 mg, well under the 30 mg limit required by the API and ILSAC, while Royal Purple API 5W-30 and Mobil 1 Extended Performance 5W-30 came in just under the limit at 25.4 mg and 28.2 mg, respectively.

“Turbochargers are becoming more prevalent because they play a critical role in helping vehicle manufacturers deliver the fuel economy the government mandates as well as the power and performance enthusiasts demand,” said AMSOIL Vice President, Technical Development Dan Peterson. “Demonstrating our protection capabilities in severe applications like turbo technologies backs up our commitment to car enthusiasts around the world.”

*Based on independent, third-party testing of AMSOIL® Signature Series 5W-30, Mobil 1® Extended Performance 5W-30 and Royal Purple® API 5W-30 in the ASTM D6335 bench test required by the API SN Resource Conserving specification.

Test results represent the formulations available as of April 2016.  Formulations were coded to eliminate bias during testing and samples were tested in random order.  An appropriate number of trials of each oil were run to produce results at or above the 95 percent confidence level when compared to AMSOIL Signature Series 5W-30 Synthetic Motor Oil.

Find more information at www.amsoil.com/depositprotection.


Synthetics Expected to Grow

2017 January 11 • Lube Report (Lubes'n'Greases) Article

Global demand for all lubricants has been projected to rise slowly in coming years,  but industry sources forecast significantly faster growth for synthetic  and semi-synthetic products.

Recent increases in demand for synthetics and semi-synthetics was enabled by expansion in API Group III base stock supply, and coming introduction of more Group III capacity should allow a further uptake of higher-performing lubes.

The overall lubricant market is expected to grow less than 1 percent annually through 2020,  however, synthetics are projected to grow almost 4 percent per year , and semi-synthetics just under 1.5 percent, according to projections by Kline & Co. consultants. Milind Phadke, the director of Kline’s Energy Practice, told the Union of the European Lubricant Industry’s Annual Congress in October  that synthetics will grow faster than  semi-synthetics because the ample availability of Group IIIs will hold down their relative cost.

READ:  Lube Report (Lubes'n'Greases) Article 2017 January 11

All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL-engineered for use in the applications shown.


A Commitment to Excellence in Synthetic Lubrication since 1972
“The First in Synthetics”® The QUALITY-FIRST 25,000-Mile Standard in Synthetic Motor Oil since 1972

Decades and Thousands of Miles Ahead of The Competition



Expanding the boundaries of lubrication science and redefining the performance possibilities of engines, equipment and machinery in automotive, commercial and industrial applications since 1972.


MINIMIZE Wear and You MAXIMIZE Reliability and Productivity

Solve or Eliminate Some Costly and Time-Intensive Maintenance Procedures


“The First in Synthetics”® REDUCE Equipment Down or Out of Service Time  REDUCE   Equipment Down or Out of Service Time 
“The First in Synthetics”® REDUCE Lubricant Inventory Requirements  REDUCE   Lubricant Inventory Requirements 
“The First in Synthetics”® ELIMINATE - Premature Equipment Failures  ELIMINATE   Premature Equipment Failures 
“The First in Synthetics”® REDUCE Fuel and Energy Consumption  REDUCE   Energy and Fuel Consumption 
“The First in Synthetics”® REDUCE Hazardous Waste Lubricants  REDUCE   Hazardous Waste Lubricants 
“The First in Synthetics”® STREAMLINE Maintenance Protocols  STREAMLINE   Maintenance Protocols 
“The First in Synthetics”® REDUCE Waste Disposal Expenses  REDUCE   Waste Disposal Expenses 
“The First in Synthetics”® MAXIMIZE Equipment Service Life  MAXIMIZE   Equipment Service Life 
“The First in Synthetics”® REDUCE Man Hour Requirements  REDUCE   Man Hour Requirements 
“The First in Synthetics”® EXTEND Lubricant Drain Intervals  EXTEND   Lubricant Drain Intervals 
“The First in Synthetics”® REDUCE Capital Expenditures  REDUCE   Capital Expenditures 
“The First in Synthetics”® INCREASE Production  INCREASE   Production 

A Commitment to Excellence in Synthetic Lubrication since 1972

Maximum Oil Change Drain Intervals . com Serving Cedar Bluff, Centre, Gaylesville, Leesburg and Sand Rock in Cherokee County Alabama

Maximum Synthetic Oil Change Drain Intervals  Documented Performance   1978 Chevy Van goes over 500,000-Miles on just 3 Oil Changes using Synthetic 10W-40 Motor Oil  1978 Chevy Van goes over 500,000-Miles on just 3 Oil Changes using Synthetic 10W-40 Motor Oil

1978 Chevy Van goes over 500,000-Miles on just 3 Oil Changes using Synthetic 10W-40 Motor Oil

How much TIME and MONEY have YOU been Pouring DOWN the DRAIN by not optimizing YOUR vehicle oil change drain intervals?  How much TIME and MONEY have YOU been Pouring DOWN the DRAIN by not optimizing YOUR vehicle oil change drain intervals?

Cherokee County Alabama Factory Direct QUALITY-FIRST Fuel Efficient Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Max Synthetic Oil Change Drain Intervals  Documented Performance   1990 MACK E7-400 Engine Teardown Inspection of 409,000-Mile Synthetic Oil Change Drain Interval  1990 MACK E7-400 Engine Teardown Inspection of 409,000-Mile Synthetic Oil Change Drain Interval

1990 MACK E7-400 Engine 409,000-Mile Synthetic Oil Change Drain Interval • Engine Teardown Inspection

How much TIME and MONEY have YOU been Pouring DOWN the DRAIN by not optimizing YOUR vehicle oil change drain intervals?  How much TIME and MONEY have YOU been Pouring DOWN the DRAIN by not optimizing YOUR vehicle oil change drain intervals?


Group III: The Big Rigs' Next Big Thing?

 2017 January 4 

As environmental regulations and stricter fuel economy mandates continue to stack on truck manufacturers, API Group III base oils are increasingly catching the attention of heavy-duty diesel engine oil formulators to bring high-performance finished lubes to fleet operators.

As environmental regulations and stricter fuel economy mandates continue to stack on truck manufacturers, API Group III base oils are increasingly catching the attention of heavy-duty diesel engine oil formulators to bring high-performance finished lubes to fleet operators.

Many OEMs are now factory-filling their trucks using fuel-saving engine oils blended from Group III base oil.  European companies like Volvo, Scania, Man, Renault and Mercedes Benz (Daimler) favor both fully synthetic SAE 5W-30 and semi-synthetic 10W-30 viscosity oils, while U.S. heavyweights such as Daimler Trucks North America, Cummins, Mack and Navistar prefer 10W-30 for initial fill.

READ: Lube Report (Lubes'n'Greases) Article 2017 January 4

Making Sense of The New Diesel Oil Specifications
New Diesel Engine Oils coming 2017 February 6th

Rome Georgia Factory Direct Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Maximum Synthetic Oil Change Drain Intervals  Maximum Fuel Ecnomy Performance   1996-04 • Cale Yarborough and Bobby Unser Brown Bag Racing SECRET  1996-04 Cale Yarborough and Bobby Unser Brown Bag Racing SECRET

1996-04 Do-it-Yourself Maximum Vehicle and Equipment Fuel Efficiency, Economy and MPG

Fort Payne Alabama Factory Direct Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Max Synthetic Oil Change Drain Intervals  Maximum Fuel Ecnomy Performance   1996-11 • MAXIMUM Vehicle Fuel Economy, Fuel Efficiency and MPG  1996-11 MAXIMUM Vehicle Fuel Economy, Fuel Efficiency and MPG

1996-11 Do-it-Yourself Maximum Vehicle and Equipment Fuel Efficiency, Economy and MPG

Gadsden Alabama Factory Direct Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Maximum Synthetic Oil Change Drain Intervals  Synthetic Products and More:  No matter what you ride, drive or operate, We Have YOU Covered.

Maximize performance for virtually any vehicle or equipment you own. While most oil manufacturers offer less than 300 SKUs available to customers, We offer more than 1,000. We also offer filtration products, fuel additives, greases, hydraulic fluid, gear lube, transmission fluid and even products to help you in the garage when performing maintenance.

NOTE: This is only a partial listings of our products offered. Also available are products from our premium aftermarket partners (Donaldson, Mann and Wix Filtration Products).

  FREE 48-Page Factory Direct PDF Catalog Browse the full line of premium AMSOIL products in the latest AMSOIL factory direct catalog...

Cherokee County Alabama Factory Direct Vehicle Synthetic Motor Oils and Lubricants with Nationwide Direct to YOUR Door Delivery

Independent “Lifetime” AMSOIL Dealer since 1982 - Message # 256-792-8181

I offer an On-Line Preferred Customer (By Wholesale Factory Direct) Membership to Everyone.  I offer an On-Line Preferred Customer (Buy Wholesale Factory Direct) Membership to Everyone. 


6-Month ($10.00) or 1-Year ($20.00) Membership and eMail Address Require to Receive Promotions


AMSOIL Preferred Customers (P.C.s) pay wholesale prices for AMSOIL products, a savings of up to 25 percent, while also receiving these additional benefits:

  • Exclusive eMail promotions for reduced shipping costs
  • Exclusive eMail product-specific promotions
  • Randomly selected P.C.s receive free gear when they place an order
  • Earn one point for every dollar spent on AMSOIL products. Every 50 points is redeemable for $1 off a future order
  • Earn 500 bonus points for referring new P.C.s or Dealers to AMSOIL
6-Month ($10.00) or 1-Year ($20.00) Membership and eMail Address Require to Receive Promotions
Independent Lifetime AMSOIL Dealer since 1982

AMSOIL = MAXIMUM Vehicle Protection, Performance and Fuel Economy (MPG) with every Synthetic 25,000-Mile Oil Change Drain Interval since 1972