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We aren't happy until you aren't happy
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You mean 220 degree oil temp? Have seen quite a few ZZ502's live long healthy lives even with the stock cam. I think a cam change and they would be solid performers in a boat for the money. Some ZZ572's also. Agree with you though.
Correct. No car engine is set up intending to run 120F oil temps like some boats do. So you either have to run lighter oil or an oil thermostat.