coolant effect on main bearings


Asked by Dec 13, 2015 at 09:38 AM about the 2001 Subaru Outback Base Wagon

Question type: Maintenance & Repair

I'm told that coolant in your oil will destroy your main bearings. I'm considering
doing the head gasket job but don't want to find out about the bearings going
bad after spending $$$$$. How would I know?

2 Answers


while you are in there, just rebuild the whole engine- the bearings are worn just from regular driving after 15 years- if you think a Subaru is worth it-


As long as the engine hasn't sat with coolant in the oil very long the pitting will be at a minimum, but like Jamn stated after 15 years there is going to be wear on the bearings as well as other vital componets, so at this point in time you need to decide if the vehicle is worth either a complete tear down and rebuild or just a used engine and hope for the best, or bite bullet and put in a new engine. If it still runs you could trade it in for a newer vehicle but you won't get much with engine trouble. HTH

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