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No gains yet that I've noticed...with the oil. Still around 15.4. My wife noticed the difference in sound. "What's wrong with your truck?" "what?" "Its sounds quieter"
So yeah, sounds a lot better, filled up without once, didn't have any at the time of fill up...Wow, what a difference!! I thought the truck was gonna blow up or something Hahaha souned horrible after running WITH the oil, next day put the oil in and 5 minutes later she was purring again
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