660 grizzly coolant bypass head tube repair

[DJRANCH]

I made the mistake of using the ICE coolant in my unit and it rotted out the head fittings. Using cheap Harbor Freight air drill made the repair a snap without tearing down the motor.Make sure you go slow tapping the head, the pipe tap is a wedge and only do a couple of turns at a time. Going back to regular Green 50/50 antifreeze.

[Mech]

Yeah it pays to use the coolant recommended by the manufacturer. They know what metals and materials are in your engine, and even how the castings were made makes a difference.