Thermostat housing has a green buildup inside water jacket. Its like a paste. Is this normal as all my other motors have had a white buildup. only saltwater usage.
2002 model done 350 hours uses about 1 inch of oil indicated on dipstick for 10 hours motor time. Runs well since new but oil runs out if not topped up. It is not leaking and spark plugs are clean. Agent has undertaken repairs twice... removed bottom of motor machined and resealed.
