Dear all, my 200r4 swap is loosing oil somewhere and I'd need some suggestions. I have extreme automatics stage 2 200r4 instaled in 1980 camaro. Another thing I should mention is Derale Atomic-Cool 13950 oil cooler mounted in front of radiator above the front reinforcement bar. After a drive transmission case is oily. Upper part of transmission case is oily only on passanger side, meanwhile oil pan has oil everywhere. The vent area is dry. Now the car is sitting for the winter and top-end rebuild and I performed an experiment: cleaned the transmission with brake cleaner, so there was no trace of oil anywhere. Then I over-filled it, so part of the front seal is below oil level. I did not start it, I just left it sitting like this for few weeks... no traces of leak anywhere. This leads me to conclusion that oil gets out of dipstick, runs down to where TV cable and dipstick touches, from there a part going on tv cable runs to the point where TV cable touches transmission case and that is why passanger side transmission case gets oily when driving around... Does this sound possible? I marked oil level a tad below transmission pan gasket and checked with warm oil, transmission in park, engine idling. Would not oil seep out of dipstick tube only when severely overfilled? Any ideas on what should I look at? Other than one 4th gear switch failure transmission seems to be running great. Many thanks for your input.