Just swapped over to Valvoline Restore and Protect in my N52 BMW daily driver with 215k miles. I drive a lot and am taking before and after photos inside the valve train. I have exclusively used Castrol Edge A3/B4 for years so I will have a true comparative.
Im with all these 5w40 rotella guys, just started running it in my 91 1500 with 145k miles with the 4.3tbi and she loves it, I notice a slight bump in oil pressure for sure.
Motul 8100 xcess for high mileage. I've had a few subies thrive on this stuff.
I tried to use the Pennzoil high mileage full synthetic the most, but if I didn't have the bit extra for it, I'd get Walmarts generic full synthetic high milage. I always used a Fram full synthetic filter too, they were the only ones around me that were better quality and decent price for the time. Mine got to 200k no problems!
Owner of an often abused 250k+ mile 2002 Outback here. I use Mobil1 full synthetic 5W20. Runs like a top.
Started running penzoil platinum in my mazdaspeed due to the great UOAs it got on DI motors, and just now run that in all my shit to simplify my life. Only have to keep one oil around that way.
I have a 2001 Forester L and I enjoy using Castrol Edge 5-30 during winter and Rotella T6 5-40 during the summer in Arizona.
My 2006 WRX has 323k on Castrol 10w-30.
I used to run Motul 800, but switched to 710 now. 800 has a higher flash point for high rpm racing, and I was getting carbon buildup from not running the bike hard enough.
i got a little valve clatter when i went to 0w40 on my next oil change i'll be using 5w40 (synthetic)
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