I've seen three RP xw30 uoa's posted on nasioc. One sheared to a 20 grade in 1,100 miles and another sheared to a 20 grade 3,500 or so.
One, in a modified WRX at ~5,000+ miles, was perfect (wear and viscosity). I asked the thread poster if he added the make-up oil the day before the UOA and he never answered the question.
-Dennis
One, in a modified WRX at ~5,000+ miles, was perfect (wear and viscosity). I asked the thread poster if he added the make-up oil the day before the UOA and he never answered the question.
-Dennis
Last edited: