Has anyone ever heard of an oil leak only when it's cold? If I plug my truck in it won't leak, or if it's warm outside it won't leak. If it's cold outside and I don't plug it in, it leaks until it gets warmed up. It appears to be leaking on the drivers side, if you look in the wheel well there are two lines that run on the frame that have wierd looking fittings, I think that's where it's comming from. Thanks for any advice!

 

Its probably the oil cooler that is leaking like that. I have seen it first hand on my 95 and I have heard a few others who had the leak only when cold.

 

I second the oil cooler. My son's 95 did the same thing.