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DO NOT FORGET THIS ARTICLE AS WELL!!

See Haywood's new Mack Truck now also using AMSOIL.

Amsoil vs. Castrol Syntec

Dodge Ram with Cummins Turbo-Diesel requires no oil change

Over the road grain hauler saves money with Amsoil

Mack Truck gets better fuel economy
409,000 Miles Without an Oil Change
Amsoil Synthetic Diesel -best for use in 18 wheeler tractor trailer. Big savings in maintenance.
After 409,000 miles without an oil change, the AMSOIL-protected Mack engine in this 1990 truck was wear-free as an engine in a comparable service treated to TWENTY TIMES the oil changes.
Colonial Heights, Virginia- "I didn't see any surprises in there at all," said owner/operator Haywood Gray of his 1990 Mack E7-400 engine.
Using AMSOIL Synthetic 15W-40 Heavy Duty Diesel and Marine Oil and the AMSOIL By-Pass Oil Filter, Gray ran the engine 409,000 miles without once changing the oil.
When the E7-400 engine was torn down by the local Mack dealership and its parts examined by an independent certified engine rater, it showed light to moderate wear throughout.

Inspecting the diesel engine compenents for wear after the continued use of Amsoil synthetic diesel oilIn fact, according to the engine rater, the parts could have been put right back into the engine. "I see no reason why the engine couldn't run on," he said. Oil analysis confirmed the rater's findings: the sample of used AMSOIL Synthetic 15W-40 Heavy Duty Diesel and Marine Oil contained 1/6th the lead and 1/3rd the iron allowed by Mack condemnation limits... after 409,000 miles without an oil change. That's protection - that's AMSOIL!

Gray began using AMSOIL Synthetic Heavy-Duty Diesel and Marine 15W-40 Motor Oil (AME) in the E9-400 V-8 engine of his first truck, a 1984 Mack, after the engine accumulated 45,000 miles. For 280,000 miles, Gray changed his oil at 40,000- to 60,000-mile intervals though his oil analysis reports showed, without exception, that the oil was good for continued use. At 325,000 miles, Gray increased his oil drain interval to 100,000 miles.
The engine was torn down at 600,000 miles when Gray decided to sell the truck. The cylinder linings, bearings, pistons, rings and pump, all treated to extended oil drain intervals with AMSOIL, were found to be in excellent condition.
Amsoil synthetic diesel oil only contained 1/3rd the wear metal iron allowed by Mack Truck condemnation limitsAmsoil synthetic diesel oil only contained 1/6th the wear metal lead allowed by Mack Truck condemnation limits

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Independent Engine Rater Findings
Pistons show no excessive wear after using Amsoil synthetic Diesel oil for extended periods of time. Piston rings show no excessive wear after using Amsoil synthetic Diesel oil for extended periods of time.
Engine cylinder sleeve show no excessive wear after using Amsoil synthetic Diesel oil for extended periods of time.

"The pins show no wear at all. The piston crowns and lands show a normal amount of carbon. The skirts are very clean with a few verticle lines."
-Independent engine rater

 "The rings are very, very good. All the rings are free. None are broken. No plugging whatsoever in the rings."
-Independent engine rater 		Probably 95 percent of the crosshatching is still in the liners. No scuffing, no cavitation in the liners. The liners could go back in the condition they are in."
-Independent engine rater
Engine rocker show no excessive wear after using Amsoil synthetic Diesel oil for extended periods of time. Main bearings show light wear similar to 15k to 20k miles after using Amsoil synthetic Diesel oil for extended periods of time.
Rod bearings minimal wear after using Amsoil synthetic Diesel oil for extended periods of time.
"Again, very, very light wear. These could be put right back in and used again. In an extended drain program [with petroleum oil] there's a possibility you could see maybe half again as much wear."
-Independent engine rater 		"Light wear. They compare to [those in] an engine that had 15,000- to 20,000-mile [petrolium] oil and filter changes."
-Independent engine rater 		"Minimal wear. These, too, compare to [those in] an engine that had 15,000- to 20,000-mile [petrolium] oil and filter changes.
-Independent engine rater
Additional Demonstrations -
Why AMSOIL has some of the best commercial diesel oil on the market.

Gray's successful use of AMSOIL synthetic motor oil in extended drain service is not unique. AMSOIL has conducted demonstrations with fleets all over North America.

In each instance AMSOIL has been proven safe and effective in extended drain use. In fact, these studies show that AMSOIL used in extended drain interval programs consistently delivers lower rates of engine wear than conventional oils used in conventional drain interval programs.

Southern over-the-road fleet - AMSOIL was used in Cummins class 8 engines for 75,000-mile drain intervals; the fleet's normal drain intervals were 15,000 miles.

Upper midwest grocery fleet - AMSOIL was used in Cummins NTC 350 engines for 74,000-mile drain intervals; normal drain intervals were 12,000 miles.

Northern grocery fleet - AMSOIL was used in Detroit Diesel Series 60 engines for 79,000-mile drain intervals; normal drain intervals were 20,000 miles.

Virginia Beach, Virginia owner/operator - AMSOIL was used in Cummins 350 engine for 325,350 miles without a drain.

Midwestern trucking fleet - AMSOIL was used in Detroit Diesel Series 60 engines for 60,000-mile drain intervals; normal drain intervals were 20,000 miles.

Northern tier over-the-road fleet - In an ongoing demonstration, AMSOIL Series 3000 5W-30 is being used in a fleet of Cummins N-14 engines for extended drain service with oil drains based on the findings of used oil analysis. One change was performed at one year with 125,000 miles on the AMSOIL. The oil was recommended for continued use. Normal oil drains are at 20,000 miles.

WHAT MAKES AMSOIL SO GOOD?
 "Synthetic basestocks, top-quality additives, and most importantly, more experience formulating synthetic motor oils than any other company." says AMSOIL Director of Technical Sales Dave Anderson. "AMSOIL" first put a long-drain synthetic diesel oil on the market in 1975 and since then has introduced three other long-drain synthetic diesel oils."

DOES AMSOIL OFFER A WARRANTY?
 "Yes. AMSOIL warrants that the use of its lubricants will not cause mechanical damage to any mechanically sound equipment when AMSOIL products are used in full compliance with AMSOIL recommendations.
AMSOIL extended drain interval recommendations are set at a minimum of two times or more than the engine manufacturer's recommendation as determined by oil analysis. Diesel operators who use AMSOIL for extended drains are fully protected.
Studies have proven time and again that extended drain intervals with AMSOIL are a win/win situation - truckers win with less downtime and oil expense and they win big with reduced engine wear."

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