oil leak, not the normal suspects... - Ford Powerstroke Diesel Forum
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Old 04-15-2013, 06:21 PM
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oil leak, not the normal suspects...

I've owned this truck for 2 years..2002 7.3 bought with 73k now with 100k so far the oil leaks that i have individually fixed were turbo o-rings, ebpv is now plugged and gone, and intercooler boots, all three were done at three different times with successfully stopping leaks.

last few weeks i noticed the inspection plate on the trans (starter side) has fresh oil on it and starting to drip..this is a slow leak maybe a spot here or there on the driveway nothing crazy so if i don't find an answer i give up haha..

I've checked the normal suspects (turbo, hpop lines, rear/front oil plugs, valley is completely dry still from the last oil leak i fixed, intercooler boots, oil dipstick tube fitting, oil pan.

i thought it was the oil pan because it was right in the corner where the starter mounts, but after removing the inspection plate i see that all around the flywheel is wet( inside the bell housing). im thinking maybe the rear main seal is leaking and then its getting thrown all over the back of the motor, or its coming from somewhere high up on the back of the motor. i know rear mains are rare on these so ive heard.

I also noticed while under there that my oil cooler had some fresh looking oil on it. Is it possible for this to leak/seep oil without having oil in coolant or coolant in oil..i checked both and theyre fine..

sorry for the novel..

Jason
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Old 04-15-2013, 10:28 PM
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Oil leak on your oil cooler is probably dry rotting orings. It's easy to rebuild.

The oil on the cooler could be the valve cover bolts loose back at the fire wall.

Your oil pan is more than likely leaking at the corner by the starter. Pull the inspection cover and then start the engine and go under and look while it's running. Mine is doing it in the exact same spot.

It's not normal for the rear main seal to leak, but it does happen once in a blue moon.

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Old 04-16-2013, 10:03 AM
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Ok yea guess ill take another look at it. The oil in the bell housing could be residual oil from my past oil leaks I guess.
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Old 09-20-2013, 01:03 PM
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Any updates on leak?

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Old 09-24-2013, 03:07 PM
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yea its the oil pan gasket right at the starter. It's not bad yet but I have a new OEM pan covered with special corrosion inhibitor from CRC ready to go in when it does get bad.
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