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Oil Problems

wingplow's Avatar
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11-02-02, 06:08 PM   #1  
Oil Problems

I have a 1989 Ford 351. I noticed that my oil pressure would go up and down quite a bit. I have an oil leak at the rear main seal. The seal was put in and the oil changed at the same time. When the next oil change came around I noticed that the old oil filter had a blockage in it. It was like the inside of the filter just expanded and cut off the oil flow. My question is can this lead to premature oil seal failure. If anybody would like to see a picture of the oil filture they can email me @ [email protected]


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knuckles's Avatar
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11-02-02, 07:21 PM   #2  
No. The rear main seal does not seal pressurized oil. Oil pressure/flow problems will not cause seal failures.

13 years is pretty good for a Ford rear main seal. Check your PCV system. Fords are good for clogging up the PCV passages. This causes excessive crankcase pressure, which WILL cause oil leaks.

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