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valve rattle

MalcolmT38MalcolmT38 Member Posts: 1
edited May 2021 in Mazda
My MPV has 232,000 miles, burns no oil between changes, has never had the engine opened, still gets 25 mpg on highway, transmission overhauled at 80K. Problem is upon acceleration I hear rattling noises for a second or so coming from the top of the engine, no lights coming on, fresh oil. Is it time to start adding STP?
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  • jipsterjipster Member Posts: 6,299

    How's your MPV doing?

    2021 Honda Passport EX-L, 2020 Honda Accord EX-L, 2011 Hyundai Veracruz, 2010 Mercury Milan Premiere.
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