Just curious what water temps everyone is seeing on their 502s? I have a 502 Mag EFI and at cruising speed and WOT I see 180, pegged. It idle and slower speeds the needle bobs between 150 and 180. When the impeller starts to go bad it runs above 180 in to the 190-200 range and then after a day the impeller is toasted.
When I had my boat serviced they said my temp gauge was off about 10 degrees. Read hotter than actual. I have Gaffrig II's.
So is 180 the best place to have it sit when running? Should I check the thermostat and get one that runs cooler/opens earlier?
My father in law said he thinks that is too hot, but it has been the norm, so should I be concerned?
Thanks.