Mystery Oil Leak From Transmission(?) (Page 2/2) 1985 Fiero GT MAR 01, 09:42 PM quote Originally posted by Additivewalnut: Not a bad idea. I've never filled it myself but maybe it got topped off at some point before I owned it. I put a total of 150 miles on it before the 3800 got dropped in. Where is the vent? The vent is a small plastic plug on the top of the trans, the fill port (also the level "gauge", you fill it with a long flexible funnel until oil starts to overflow out the hole) is located on the drivers side of the transmission, 1 large bolt that is like the oil pan drain and the transmission oil drain, but with a little plastic crush washer that has a tab sticking out, maybe 1/4x1/2" off the side of the bolt jelly2m8 MAR 03, 03:22 AM quote Originally posted by Additivewalnut: Not a bad idea. I've never filled it myself but maybe it got topped off at some point before I owned it. I put a total of 150 miles on it before the 3800 got dropped in. Where is the vent? Here is where you bring your self back into reality, Did your trans have oil over it before the engine swap of after? Additivewalnut MAR 03, 11:26 AM quote Originally posted by jelly2m8: Here is where you bring your self back into reality, Did your trans have oil over it before the engine swap of after? Only noticed after, but I wasn't able to drive it much before the swap. Spun bearing.