Questions and Answers

Ford Bronco Oil Stop Leak Q. I have a 1984 Ford Bronco II, and oil is coming out of the dipstick. It just started doing that. I put some oil stop leak in it about a week ago and am wondering if that might have plugged it up. How do I fix this problem? It has a 2.8 liter V-6 with a 2bbl carburetor, automatic transmission. Should I flush the engine with something? I put the oil stop leak in at the time I changed oil.

You can post this with your other questions, maybe it would keep someone else from making the same mistake. What a doosey!

A. As Oliver Hardy would say; "This is another fine mess you've gotten us into". I won't preach, you learned your lesson about stop leaks. Lets see what we can do to fix it.

First of replace the PCV valve and check the hose to make sure they are good. That will cause this to happen.

Then I would drop the oil and filter and put in a new filter, three quarts of oil an two quarts of transmission fluid. Start it up and let it run for about 30 minutes. Then shut it off and let it sit over night. Now you can drive it for about 500 miles, no drag racing or pulling tree stumps. Just normal every day driving.

Keep checking it and see if that helps. If not drop the oil and do the same thing except this time use four oil and one transmission fluid and drive it. The transmission fluid has a high detergent content and it will clean out the inside of the engine. Hopefully it will knock out whatever plug the stop leak caused. If it still does it after, say, three 500 mile changes the next thing to do would be a power oil flush.

You have to keep in mind that the cleaning may reveal a bad engine. I have seen high milage engines that ran perfectly fine until they had an oil flush. Then it was all down hill.