Discuss Possible Rear Main Seal Leak on AllFordMustangs.com, the place for Mustang enthusiasts.
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Yesterday, after I backed my car out of the garage, I noticed a fairly small oily puddle on the floor or my garage. After getting semi underneath my car, I can see a small wet patch on some part of the transmission, near where it bolts up to the motor. I think it might be a main seal leak, but I'm not 100% sure.
I don't know if this could have caused it, but I was coming home the day before this happened, and I missed 3rd at about 45 and went into 1st by accident. I hit the rev limiter pretty hard, which obviously couldn't have helped.
If someone knows how I can tell for sure if its a main seal, then please let me know.
Thanks for your help.
1993 LX Coupe Show: Front 18x9 Black Bullit wheels, Rear 18x10 Black Bullitt deep dish wheels, Cervini's 2.5" Cowl hood, Autometer Phantom 10K tachometer, Autometer Ultra-Lite carbon fiber FP gauge Go: GT40P Explorer motor, Edlebrock Performer intake, AFM 4" Power Pipe, TFS Stage 1, ProForm 1.6's,Granetelli 24lb MAF, MSD Blaster Coil + distrib, Taylor Pro wires, UDP's, GT40p long tube headers, o/r 2.5" H pipe, 2.5" cat back w/ Flowmaster 10 Series mufflers, 3.73s
sounds to me like you blew the rear main seal, way too high revs = way too high oil pressure, so the seal pops out. do you see seepage where the bellhousing meets the block? only way to be sure would be to drop the tranny, remove the clutch and flywheel and inspect the seal. they are an absolute nuisance if all your replacing is that seal. you might as well save up for a clutch/flywheel/driveshaft since your going to be in there anyway.
either way, i recommend replacing that seal asap, because it can leak oil on your clutch and make it slip.
the seal is about $12, you'll need some caliper grease or similar grease, and a drift pin that is a little wider than the width of the seal. remove the old seal carefully with a pick, clean the remaining pieces of the seal out, push the new seal on by hand and then take the drift pin and tap it in, going top,bottom,left,right; listen to the sound it makes when your tapping it, when you hear a metal "clink", its tapped in all the way and your done.