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Motor Oil Test and Comparison

AMSOIL vs. Mobil 1

409,000-Miles Without An Oil Change

AMSOIL Excels in API Sequence IIIF Performance Test

Motor Oil Performance Tests & Comparisons

Temperature Extremes Call For Superior Motor Oils

Why Harley-Davidson Owners Choose AMSOIL

Synthetic Motorcycle Oil & Harley-Davidson Warranty Issues

AMSOIL Synthetic Gear Lube Outperforms Valvoline Gear Lube

8.2% More MPG With AMSOIL Synthetic Lubricants

AMSOIL Proves Superior In Clark County Field Test

AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil is Correct Choice for Jeff Foster Trucking

AMSOIL Products Improve Efficiency and Reduce Operating Costs for Gerlach Trucking

What is the Noack Volatility Test?

What is the Four-Ball Wear Test?

What is TBN?


*** Oil and Filter Prices as of June 2009 ***

Buy AMSOIL at Wholesale Prices AMSOIL Synthetic Gasonline Motor Oils AMSOIL Synthetic Diesel Motor Oils
AMSOIL Synthetic European Motor Oils AMSOIL Synthetic Racing Motor Oils AMSOIL Synthetic Motorcycle Motor Oils
AMSOIL Synthetic 2-Stroke Motor Oils AMSOIL Synthetic 4-Stroke Motor Oils AMSOIL Synthetic Tansmission Fluids
AMSOIL Synthetic Gear Lubes AMSOIL Synthetic Greases AMSOIL Synthetic Hydraulic Oils
AMSOIL Synthetic Compressor Oils AMSOIL Gasoline Fuel Additives AMSOIL Diesel Fuel Additives
AMSOIL Filtration Products AMSOIL Other Products Buy AMSOIL at Wholesale Prices

Which AMSOIL Products Are Recommended For Your Vehicles?

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Truck Driver Takes Big Savings to the Bank Using AMSOIL Products

Terry Anderson Jr. of Chesapeake, Virginia saves money, time and fuel using AMSOIL products.

In fact, he saved $5,679 the first year he switched to AMSOIL lubes, filters and additives.

TAKING SAVINGS TO THE BANK - Terry Anderson with his 2005 Peterbilt dump truck. Anderson reports savings of $5,679 in one year using AMSOIL lubes and filters.

Anderson, owner of Terry Anderson Jr. Hauling Inc., owns and operates a 2005 Peterbilt dump truck with a Cat C-7 engine. He first installed AMSOIL 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil and an AMSOIL Ea Oil Filter in the truck. About a month later, he installed an AMSOIL By-Pass Filtration System.

"Initially, I was concerned about the upfront cost of about $400, but soon found out it was money well spent," he said.

Used oil analysis at 10,000 and 25,000 miles deemed the oil suitable for continued use, and he continued to run on the same oil.

"I changed my full flow filter after the second sample was sent in," Anderson said. "The money I saved on oil alone in the first 25,000 miles paid for the by-pass filter system." At one year, and more than 50,000 miles on the same oil, a third oil analysis reported the oil good for continued use. "The savings in the oil changes alone is enough to justify using AMSOIL and the by-pass filter system," Anderson said. "More surprising was the increased fuel efficiency I saw on a daily basis."

He typically changes the oil in the Peterbilt four or five times a year at $159 each change. "That is $759 a year." He said. "I didn't have to get my hands dirty changing the oil at all for a year thanks to AMSOIL and the by-pass filter system."

Anderson also realized increased fuel efficiency. "After changing my Peterbilt over to AMSOIL lubricants and filters, I saw an increase in my fuel efficiency of one mile per gallon," he said. His fuel efficiency increased again when he used AMSOIL Diesel Concentrate and Cetane Boost. "MPG is huge in my world," Anderson said. "The more miles I can go on one gallon, the more money I put in the bank."

With diesel fuel prices being so high, AMSOIL lubricants, filters and additives have saves Anderson's company about $30 a day in improved fuel efficiency.

Savings he realized in the first 15 days with AMSOIL products paid for his initial investment, Anderson said. "The remainder of the year that $30 a day went straight to the bank along with the savings from the extended drain intervals."

Trucker Saves Thousands with AMSOIL

Blake Thompson is one happy trucker.

Using AMSOIL products in his diesel engines saved him $5,000 in fuel costs in one year.

In 2006, Thompson was a diesel mechanic in Fortville, Indiana when he fist became familiar with AMSOIL products. Thompson had a dream of owning his own trucking company.

In November 2007, Thompson bought his first diesel tractor - a 1999 International with an M11 Cummins engine, an Eaton 4-9 transmission, five low-range gears, four high-range gears and a twin screw (two differentials) rear-end. "It was in beautiful shape with 580,000 original miles," Thompson said.

Thompson is now a local hauler with two trailers. He uses one for hauling wood products - sawdust and wood chips, and the other for agricultural products, including corn and soy beans. The truck and tractor have a maximum gross weight of 80,000 pounds.

Thompson had his truck for only a short time before he switched to AMSOIL. With 590,000 miles on his tractor, he signed on the dotted line to become a commercial account. He purchased AMSOIL Engine Flush (AEF) and twin packs of AMSOIL 15W-40 Heavy Duty Diesel and Marine Oil (AME).

Thompson said he is more than happy he switched to AMSOIL products. He reports that while towing his hopper trailer his fuel mileage increased from 5.5 to 6.0 miles per gallon. While towing his walking floor trailer the fuel mileage increased from 6.0 to 6.5 miles per gallon.

Oil analysis at 10,000 and 20,000 miles showed the oil was "good for continued use." Typical oil drain intervals for the big diesel engine is 20,000 miles.

Thompson was spending $75,000 a year on fuel. After investing $500 in AMSOIL products, he is spending $69,500 a year on fuel. That's a savings of $5,000 per year!

Thompson is considering using oil analysis to extend his oil drain intervals even further, but Thompson said he is so happy about the fuel savings that he is satisfied changing the oil at his current drain intervals.

Thompson also uses AMSOIL Synthetic 5th Wheel Grease (GFW) "because it goes on easy and stays where you put it." He can also see the difference in the spring shackles and king pins with AMSOIL Synthetic Heavy Duty Grease (GHD). Thompson says he used to have to pump several pumps, with brand X grease, before the grease started squeezing out. Now when he starts to pump the grease gun, the grease immediately starts to squeeze out of the joints. "That shows that the AMSOIL Heavy Duty Grease stays where you put it."

Thompson's business is growing. He recently bought another used tractor that has more than 470,000 miles on the engine. He says he will use AMSOIL 15W-40 Heavy-Duty Diesel and Marine Motor Oil in that one too, and he is eager to try the gear lube in his bearings, transmission and differentials.

Thompson has continued to buy AMSOIL 15W-40 Heavy Duty Diesel and Marine Motor Oil, Oil Sample Kits, Heavy Duty Grease and 5th Wheel Grease.

Why is AMSOIL Synthetic Oil Better?

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Premium AMSOIL Synthetic Motor Oils offer the longest drain intervals on the market, unsurpassed protection and performance that effectively extends equipment life and improved fuel economy, saving customers money at the pump and reducing the nation's dependence on foreign oil.

"AMSOIL INC. warrants that the use of its lubricants will not cause mechanical damage to any mechanically sound equipment when AMSOIL INC. products are used in full compliance with the company's recommendations and instructions."


AMSOIL synthetic motor oils are formulated to surpass engine test specifications, offering protection far greater than competing motor oils for extended drain intervals. Most synthetic oil manufacturers make no claim to extended drain intervals, deferring to the maintenance schedule provided by the vehicle manufacturer. With its unparalleled oil and warranty program, AMSOIL offers consumers unprecedented protection and economics.

Another AMSOIL First

More than 20 years ago, AMSOIL began using the NOACK volatility test as a comparison tool and measurement of quality. Back then, nearly every oil tested side-by-side with AMSOIL synthetic motor oils failed, and those that passed barely squeaked by. Other oil companies paid no attention to NOACK results until Ford Motor Company made it a requirement for service fill oils, validating what AMSOIL had said all along.

THE NOACK Volatility Test
The NOACK Volatility Test determines the evaporation loss of lubricants in high temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, reduced fuel economy and increased oil consumption, wear and emissions. AMSOIL Synthetic Motor Oil resists high temperature volatization better than other motor oils. AMSOIL Synthetic Motor Oil maintains peak fuel efficiency and reduces oil consumption and emissions.

AMSOIL Now An ISO Certified Manufacturer
AMSOIL recently received ISO 9001:2000 certification of our Quality Management System (QMS). NSF International Strategic Registrations is the registrar that has verified our QMS meets the requirements of the ISO 9001:2000 standard, the most widely utilized quality standard throughout the world for quality management systems. ISO standards are used by over 300,000 companies worldwide setting rigorous standards for businesses, government and industry.

ISO 9001:2000 is applicable to any manufacturing and service organization providing a framework for system development that focuses on the customer, quality system performance and ongoing improvement. AMSOIL received ISO 9001:2000 registration under the scope: synthetic lubricants blending, packaging, and other fulfillment directly associated with lubricant product.

The ISO certification puts AMSOIL in line with some of the most efficient companies in the world. It is further assurance that the products and services AMSOIL provides will continue to maintain the high level of quality the company always demanded.

AMSOIL Product Information

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Personal contact information will only be used to provide requested information or assistance. You will not be enrolled in advertising or marketing programs and your information will not be sold.

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Which AMSOIL Products Are Recommended For Your Car or Truck?
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What Drain Interval Does AMSOIL Recommended For Your Vehicle?
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