Quote:
Originally Posted by JoeBoxer
I'm sure with my mods my warranty is questionable anyways ...
|
Ding, ding, ding. We have a winner!
Sportsguy, if you're adding a turbo your warranty is done anyway so just run one of the above oils. A cheaper option would be Castrol Edge SPT (or whatever it's called now) 0W-30 (German Castrol).
This is what Amsoil says about non-API oils. They do offer both certified and non-certified.
API Certification Concerns
Another common misconception is that motor oils must be API certified in order to meet warranty requirements. The fact is, lubricants are not required to be certified by the API, only meet or exceed API specifications. An API license indi- cates that a specific motor oil formulation has passed the minimum performance standards as defined by a series of laboratory bench tests that include physical, chemical and engine tests.
http://www.amsoil.com/news/2008_worr...warranties.pdf
It really depends how much grief you would get from a dealer. The first thing that Subaru, and probably Scion, would ask for in an engine repair warranty claim is your oil receipt.
There was a case on nasioc where a guy ran API SM certified Rotella T6 5W-40 in a stock WRX one model year after Subaru dropped 5W-40 from the manual. He took his car to the dealer with a check engine light and the dealer claimed that he had a misfire from running 5W-40, even though there were no changes to the engine from the previous year.
The dealer drained the Rotella, added 5W-30, and charged the guy $100 for an oil change. One week later, the check engine light came on again.
-Dennis