Valvoline historically has always been about the OEM drain interval.
Roger England said they have all the engine testing capability, the chemical lab, chemical analytics. Working with the lab in India, it's synthesized and scaled up to production.
I wish people applied the same level of skepticism to other brands. It's interesting how selective people are in their criticism. You can clearly see the bias and selective criticism on display.
The before/after shot of the piston was only 4k miles and it cleaned up quite well for just one OCI IMO.
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