Iron in M1 UOA's?

[buster]

Quote:
Piston cleanliness and ring sticking, - Valve train wear protection. Cam & tappet wear must be less than 10 µm. - Engine cleanliness and sludge: after 203 hours, no deposits must be visible. - Bearing wear protection: visual rating according to Porsche in-house method.


These are examples where oil analysis won't help you.

 

[tig1]

Originally Posted By: buster
Originally Posted By: tig1
Buster,
Some will say M1 buys off Porsche. Sounds like Porsche has done an extensive testing of oil, and will settle for nothing but the best for their cars.


I don't think there is a "best". Approved, yes.

w/o approval, you don't know what you are getting.


Isn't approved meaning the best for Porsche?

 

[buster]

No, there are several Porsche approved oils. XOM has a contract with them.