I got a boat with a 4.3 GM, and their is water in the oil. most likely a head gasket or cracked head...well im tearing the motor down this weekend and I was wondering if I could use regular HG's like in a GM truck or dose it have to be a marine HG?
I would stick to a marine HG... salt water has no mercy. also is it a closed cooling system or does it use outside water? sorry dont know much about gayliners
Check you intake gasket. I've had a friend lose one and put water in the oil. As for the HGs. Fel pro is all we use on our I/O rebuilds.
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