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post #1 of (permalink) Old 12-07-2000, 04:00 PM Thread Starter
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How do I clean out the mud that used to be oil ?

I just found that my vaccuum leak was just a loose bolt on my intake manifold. After tightening it and driving the Jeep for the first time in a month, I checked the oil and found it a bit muddy. I figure that the coolant must have seeped into my engine due to the loose intake. I need to change the oil tonight and was wondering how i would get most of the mud out of there.

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post #2 of (permalink) Old 12-07-2000, 05:26 PM
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Re: How do I clean out the mud that used to be oil ?

If you're sure you've got anti-freeze in your crankcase don't drive it if you don't have to. Ethylene glycol is poison to oil lubricated parts. If you can find it locally flush your engine with "butyl cellusolve" after draining the bad oil. As a GM employee during the mid 80's I've seen wholesale what coolant contamination can do to engines; the early Cadillac 4100's all had coolant contamination issues and the customer's first clue was almost always a miss or backfire caused by one (or more) failed cam lobes. These folks had the benefit of a warranty and a very embarrassed GM. If nothing else I would change oil and filter, drive or run the engine in place long enough to get good and warm and change it again. Oil is cheap. Good luck.

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post #3 of (permalink) Old 12-07-2000, 07:42 PM Thread Starter
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Re: How do I clean out the mud that used to be oil ?

I just got back from changing it. I drained the old oil out and left the filter on, then I refilled it with fresh oil. I let it run for about 10 minutes and drained it again. Refilled and added a new filter. I think this will get most of it out for now. I figure I'll give it about 500 or so miles and change it again for good measure.
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