Oil Pan Or Rear Main Seal Leak F150 98 Youtube Is this oil pan leak or rear main seal?it goes around the oil pan but there's a spot that looks like its coming from above. more quantity in the back. it cou. 1997 2003 f150 1998 f150 oil pan leak noticed some oil on the bottom of oil pan on my 98 f150 4.6 sohc 2wd auto. oil can be seen on bottom of one bolt between trans and oil pan area, drivers side area. also some oil film around where oil pan meets bottom of engine just on back 1 3 of pan only.
Cost To Replace A Rear Main Seal Re: engine oil leak, oil pan or rear main seal. by u2canfish » tue feb 22, 2011 3:26 am. i have changed mine without dropping the pan completely out. it can be done. i got a 1 piece replacement and was lucky to have the old gasket come off whole. gasket was about $30. Posts: 11,931. likes: 8. received 214 likes on 173 posts. determining if rear main seal is leaking. my 1994 f150 5.0 has been leaking oil really bad the last few months. it was obvious that the pan was leaking at the rear of the engine because the back 6 bolts were wet with oil. the pan gasket has been replaced with a felpro permadry blue gasket. The best way to prove that you’ve got a rear main seal leak is the check if the engine side of the flexplate or flywheel is oily. if the rear main seal is leaking on your engine it will drip oil onto the flexplate or flywheel and sling oil around the bellhousing. most engines have an inspection cover in the bellhousing the allow you to check. The rear main seal may or may not have been leaking, but since i was doing this anyway, i went and replaced it. yes, it is a pain, but it can cost a few hundred dollars for a mechanic to do it for you. just as a rule of thumb, when oil is running down outside of engine spacer plate, it is a pan gasket.
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