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.
Originally switched to Amsoil for the Noack rating but stayed because it's just good stuff. I now run Amsoil products for all fluids in all vehicles.
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
I use AMSOIL 5W-30 for both of our vehicles. Never had any issues on either vehicle using AMSOIL.
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
I just switched over to amsoil and my mpg went down marginally. Also using the PPE larger oil filter 10 micron filter.
I am not hating on Amsoil. I am running their engine oil and ****ing hate it. burned off another quarter of a quart in the last day of driving... ive never had this kind of consumption before and there are no leaks...
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