(lack of) Oil Problem with my 5.9 - Page 2 - JeepForum.com
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post #16 of 19 Old 05-07-2009, 04:39 PM
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1930 J-Series Truck 
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DO NOT FLUSH THAT ENGINE WITH ANYTHING BUT REGULAR MOTOR OIL. Using a flush could wash your bearings then you will have noises, & not good ones.

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post #17 of 19 Old 05-07-2009, 07:30 PM
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1998 ZJ 
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A flush won't trash the bearings if used properly, ie. engine not run above idle and only run for a few minutes. Personally, I would rather the ATF method mentioned previously, as that or any other very good detergent oil will clean it out plenty well.
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post #18 of 19 Old 05-07-2009, 07:35 PM Thread Starter
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May give the flush a try after I replace the gasket. I ordered the stuff today. Is it safe to drive the car if I keep adding oil to it? I very much rely on it for my transportation.

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post #19 of 19 Old 05-07-2009, 08:31 PM
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Location: Northern Indiana
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Yep, just watch the oil level.


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