Originally Posted by cardude01
Ok. I didn't think it sounded good to let it sit in there.
My Yanmar heats up at anything over about 2400-2500 rpm. At WOT of 3200 it gets to 200 pretty quickly.
At under 2400 it runs about 180-185.
You are or have taking the heat exchange tubing bundle out to clean it correct? If so, the condition of the outer tube bundle will tell you if you really need to run coolant flush through the engine. Although doing it for one reason or another cant hurt anything.