Well, I rebuilt my motor and just started it up yesterday and it runs fantastic. My IP is slightly leaking on the top cover which is real annoying because I totally rebuilt the IP about 3-4 months ago. I rebuilt it with an updated seal kit with viton seals and all. It didn't leak at all. During the engine rebuild the IP sat for about 1 month before being reinstalled yesterday. I noticed some diesel leaking out the top cover seal. It stopped, but is leaking again. I cleaned the dripping/leaking but I am confused to why it started leaking only after a month of sitting. The diesel that is in the car was fresh, also there was some diesel kleen that I added while I filled up the tank. What should I do? Put some ATF in the fuel or just drive it and see if with time the leak stops due to the engine heat?