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I had my local Amsoil rep tell me he had a guy with a Duramax that is up to 80,000 miles on his diesel oil. He keeps getting the oil analyzed and as long as the lab says its good, he changes the filter and keeps running it. WOW! This was on a DPF engine too, where fuel dilution is a big problem. Poor engine! :(

I run Rotella T6 in mine. Awesome stuff, and only $20/gallon. I do my analysis testing too, and its always good. Last change / sample was at 12,000 miles, most of which were hard towing and it still looked great. The Mobil 1 TDT was not so good.
Same here. I run T6 with rex-x, and my oil results still are "clean" at 12k..
 
This I'm sure isn't much help but I run amsoil in the wife's lease car. Change the oil on the first oil change with amsoil and let it go for 20,000 miles then change the filter and add a half of a qt. then never touch it again.
 
This I'm sure isn't much help but I run amsoil in the wife's lease car. Change the oil on the first oil change with amsoil and let it go for 20,000 miles then change the filter and add a half of a qt. then never touch it again.
You're the reason why I will never buy a lease turn in. :sonicjay::sonicjay:
 
When i ran amsoil in diffrent engines over the years, didnt matter what engine but i would always end up losing at least a quart between changes and could never figure out why. I hated it and didn't buy into the 10k oil changes, i always changed mine at 5k regardless and it still looked like shit.

Oh and im also a huge rotella fan myself, run it in my diesel, and was very happy to find out the PO ran it to. and my step dad has had many big rigs running this oil that were all high mileage motors going to a million miles or more, lots of them still running out there today.
 
You're the reason why I will never buy a lease turn in. :sonicjay::sonicjay:
:sonicjay: and that is exactly why we lease her cars. She puts about 30k miles on a lease in the 3 years she has it and the last one I took a sample of it and sent it to amsoil the day before we turned it in. When the results came back it showed there was still a 5% life left in the oil. I was upset the dealer got that over on me. But hey I can't win everytime.
 
:sonicjay: and that is exactly why we lease her cars. She puts about 30k miles on a lease in the 3 years she has it and the last one I took a sample of it and sent it to amsoil the day before we turned it in. When the results came back it showed there was still a 5% life left in the oil. I was upset the dealer got that over on me. But hey I can't win everytime.
:woot:
 
I stay away from amsoil for motor oils... I run Mobil 1 in everything I own... Never had a problem with them one bit...
 
Discussion starter · #31 ·
I think the only reason amsoil claims you can run 80k oil changes is so they can give a way to justify to the customer the increased price over other synthetic oils on the market.

Im not against amsoil Im against a product that hides behind not being certified and there marketiting model is to go after friends and family to buy the products. I love how they claim you can get 20k miles out of amsoil on a Ford 6.0L diesel when there are many people that have had blackstone reports with consider amount of oil shear at 5k miles on the best synthetics on the market. If I can afford to drive a diesel I can afford to change the oil and keep fresh oil in the engine.
 
it's $12.50 a quart. I just bought for quarts. I've always used it in my bikes and have never had a problem with it. but I change it once a year regardless of miles.
 
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