Coolant needed for North Star engine?
Will running a 1997 northstar with only
water for coolant (no antifreeze) cause the
engine to overheat? Which coolant is
needed for engine?
Water alone would probably not cause it to overheat but you should not do this without a corrosion inhibitor additive. If your Northstar is over heating there is a good chance the head bolts are coming loose. This is a very expensive fix.