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Old 03-15-2008, 10:28 AM
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After watching a few shows and tests that were done on Royal Purple I decided to test it out for myself. I switched over to Royal Purple and some of it's additives and have gained 4+ miles per gallon. I hope to see higher gains as I go further with the fluid swaps. I also went from 87 octane to 92 octane and gained another 1-2MPG. As for HP gains that they claim I can't say anything about that because I don't have a dyno.
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Old 03-15-2008, 11:40 AM
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it wont matter where I am at,its over crowded in Illinois,I rather live in Wisconsin where the roads are fixed and much nicer with fresh air,also less to deal with.As for the royal purple synthetic oil,it wont make a difference what company you go for honestly,synthetic oil no matter what will always be better then regular oil,As for the hp part you gain with synthetic oil its about 2-3hp,you do gain gas mileage though thats for sure about 4 or above.
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