I only run Valvoline VR-1 40-wt in my air-cooled VWs
I tell you the stuff really works. My 2009 Matrix used to burn oil before I switched to Valvoline Restore and Protect.
i honestly have no way to prove if it works, but i started using it in my ‘98 corolla about 20k mi ago (known for burning oil due to flawed piston design) and have noticed a significantly lower oil consumption rate, which was almost 2qts every 5k down to less than half
I normally dont buy into stuff but my vette was burning oil, Id see a big cloud of blue smoke after I let off after every pull, few thousand miles of this stuff and I stopped seeing it.
That stuff ROCKS! Cured my stuck piston rings issue on my 201O Acura J37 engine.
It works. It’s a quality oil that I use in my daily 5.0 S550. Used in my 200k mile 2.0L turbo fusion and the first oil change was so gross. Blow by has gone done a lot.
I've used it for about 25k miles in my Camry with the 2AZ-FE engine (200k miles on it), it has the known issue with the piston rings being poorly engineered and seize up from excessive oil burning. I can personally confirm it has cleaned up my pistons, I haven't taken the engine apart so can't directly see the rings but oil consumption has reduced from 1 qt per 1k miles to now 1qt per 5k miles.
It sure does work, cleaning dipsticks and reducing oil burn has been my experience on several personal cars since starting a year ago. I bought an MDX burning almost 1 quart oil / 1k at 155k, now doesn't use a half quart every 3k now at 185k.
In my case, the oil consumption was also high—I had to refill it constantly, though BMW claims that’s 'totally normal.'
I use that Valvoline, sometimes throw in random fully synthetic oils I get in bulk from an auction. I feel like it contributed to a rear main seal leak. Thinking of switching to a 5w40
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