I run 300v Motul. Much better than Motorex cross power in my bike. Also tried Motul 7100 but that was no better than the Motorex. Have to change oil at 5000km with 300v, but I do that anyway or earlier.
Motul x-clean EFE. Went back to 5W-30 since I saw some MPG lost (the STI is DD).
Motul 8100xclean 5w40 during the summer since I'm in az and every day is 100+, the 5w30 loses its viscosity too fast in the summer
Motul 8100 xcess 5-40. I got a built shortblock and it’s the best for the boxer engine IMO
Only use Motul 8100 5w40. I have after market parts and turbo.
Only use motul. XCess gen 2 5w40 for the ‘04 wrx. I get oil samples sent to the lab on the wrx and it has consistently been improving results since switching to motul. At first they were worried about the motor and now they say it looks clean as a whistle
Always used Motul 8100 xclean 5w30 every 3k miles on the dot.
Anything from Motul Go for full synthetic and according to the grade and spec recommended by your instruction manual.
I’m switching from Motul to it since Motul is hard to come by where I am, and I hate buying oil online.
Engine was noisier with the mix vs. the previously used redline 5w40. Iron levels are up at 6.3 ppm/1000 miles Oil usage increased by 1/2 quart over the redline 5w40 TBN/TAN levels are worse than 5w40 at comparable mileage
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