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Old 04-09-2008
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Icon9 Oil Leak RMS?

Bought a 2000 2wd 5speed pickup back in December with 81kmiles. Just noticed a slight oil leak coming out of the hole between the flywheel cover and trans after 2 thousand miles. The truck had Mobil 1 in it when I bought it and I changed it with Castrol conventional oil. I am assuming this is the Rear Main Seal (RMS) leaking and the only way to fix it is to remove trans, clutch, flywheel and replace it. Did a search and didnt see much on this subject. Someone has used BarsLeaks with success and others have changed from Synth to Conventional oil. I have already switched to conventional oil and dont like to add leak stopping stuff to the engine oil. I think my only option is to replace the RMS. Any other ideas?
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Old 04-09-2008
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1 idea.
Check to be sure it is motor oil and not brake fluid.You may have a leaking slave cylinder.
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Old 05-10-2008
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Its motor oil sadly to say. The Haynes manual says on a 2WD the RMS can be replaced by removing the trans, clutch, and flywheel. Has anyone done this?
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Old 05-12-2008
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I just ripped the trans out of my 95 ranger but it was a 4x4. I would think yours would not be as hard. Mine was a pain but everything was super rusty.
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Old 05-16-2008
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I have the same problem with my 99 4x4 ext cab., only mine has 177,000 miles on it. I've got to have a "lower end overhaul" done on mine. Nothing major is going wrong, just needs a little TLC. Switching from synthetic to conventional will only hide the problem, and it'll probably get worse. Just go ahead and plan a few days to replace the RMS and that way you can check to see if all is well while your at it. Good luck.
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Old 06-03-2008
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Leak has stopped

Changed to Castrol 10w40 high milage conventional oil and the leak stopped. I dont know how long it will last but hopefully it will postpone the RMS repair for awhile.
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