Quote:
Originally Posted by Jordo!
I personally prefer Redline, based on the UOA's I was getting on my previous Z, where I was the original owner and responsible for break-in vs. "German" Castrol, but I don't recall any clear evidence of Mobil 1 being especially bad based on other folks' UOA's.
Are you going on something from the Oil Nerd's thread, BITOG or your own UOA's?
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Why do you say German Castrol? You talking about M1 0-40 euro oil?
I'm going off my UOA. They weren't bad. Just not as pretty as RL. And with the thinness, in the WRX's, those motors just burned right though it. I used RL there too and never lost a drop. This is the first motor I'm actually losing oil between changes. Same break in etc so I don't know whats up. If I ran M1 I'd probably lose it all by 3000 miles.