Michael Mirra
Member
I have 2002 8.1 horizons. I have the boat for about 5 years now trouble free. Should I be changing my coolant.
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My mechanic told me to use a fluid extractor from the coolant tank. I ended up having him do it last year because I didn't have time. That was 14 years with the same antifreeze. 415 hours on the 8.1 when the change was done. I tested it every spring and fall to make sure it was still good.Where is the drain plug located?.
On the block midway just above the oil pan and below the exhaust manifolds, 1 plug on both sides. Coolant tank draining will only get the reserve AF.Where is the drain plug located?.
He told me how to get all the AF to the tank after draining the tank initially. But as soon as I decided to have him do it I immediately forgot it.My mechanic told me to use a fluid extractor from the coolant tank. I ended up having him do it last year because I didn't have time. That was 14 years with the same antifreeze. 415 hours on the 8.1 when the change was done. I tested it every spring and fall to make sure it was still good.
On the block midway just above the oil pan and below the exhaust manifolds, 1 plug on both sides. Coolant tank draining will only get the reserve AF.