[adellicson]

I am having some serious oil leaking from the car. After having it up on a rack to get the oil changed and taking a look I can see that the oil is coming from both oil lines leading to the turbo as well as the front and rear mains and the oil pan gasket. The oil change guy told me that someone plugged the crankcase vent, causing the gasket on the oil pan to push out on shift or specifically when pulling off the throttle on shift. Kinda of what the same thing the BOV does right. So my question is why does the crankcase have a vent if the BOV is suppose to relieve this pressure on shift or pulling off the gas on shift? If it does have a vent what should I do with it? By messing with it can I releive the oil leak problems?

I am a pretty mechanical person and have had my hands dirty with pulling motors and rebuilding but the imports I dont have much experience with, this is my first. Its an 87 supra turbo with 70,000 original miles on it and totally original w/o any mods.
Second, from what I can tell I will have to pull the motor to replace the front and rear main seals and oil pan gasket. Is this true? Is there anything I can do to avoid this? Any additives that might help and are still good for motors. I have no problems replacing the turbo lines but would like to avoid the seals and pan gasket.
Also, from what I can tell I have to pull the manual tranny because the sychos in 2nd and 3rd are going. I found this strange since when I bought the car in April 06 the tranny was fine and shifted perfect. It wasn't until I replaced the tranny fluid with Mobile One synthetic that I started having sychro problems within weeks and within probably a couple of hundred miles. Now I run the car pretty hard sometimes but nothing out of hand. I might get on it pretty good but by no means beat it. In other words I dont think I totally kick the crap out of it like some people tend to do with these cars. Any suggestions or advice would be appreciated on any of the topics I have brought up. Thanks