Hi all, It seems after about 6 hours of running this year, I need to keep adding anti freeze to the port motor, about 16 ounces so far, It's doesn"t appear to going into the engine, just had Cat at the boat to do the valve adj. no ssgn of problems. Engineas are 3126B 350 hours, Any thoughts of were to check, starboard motor has been fine, both run at correct temp. Thanks Bob