I just did the 4th gear test and the engine died.
So, what DO you get when you cross a lawyer and a...........j/k?
so you've got a little time.
where exactly is the oil leak coming from? if it is coming off the top, and getting into the bellhousing, that could be getting oil on the clutch, causing it to slip when it experiences higher than normal loads. (steep hill, headwind) If its dripping, or looks like it may be coming from your bellhousing, your rear main may be going, once again getting oil on the clutch. Of course, to repair the rear main, you'll have to pull the tranny and clutch anyway. If its somewhere on the top, try to chase down the leak and fix it, and see if it helps.