i was driveing and my gage spiked hot so i pulled over right away changed the thermostat ran for two days the ran hot agin at that point i had oil in the radeator so i changed the headgaskets on both sides drove for a week and it overheated agin and there was oil in the cooling system agin pulled the oilcooler off its a one pice cooler thats about 300dollars at ford so i hooked hoses to it and and the water hose to test it and had no leakes so iam thinking a crack in the head inless someone else knows something i dont iam just at a loss cause if it was a crack in the head why did it go a hole week before it did it agin.
Has anyone had a problem with the oil getting into the cooling system on 1999 Lincoln Navigator
by glenntrotter01 in Bradenton, FL on September 09, 2012
ANSWER by globalhelper on September 09, 2012
when you pulled the heads you didn't ck for cracks,o no thats a no no. did u have them resurfaced