I'm too myself under the truck and see how right the plug and filter are.

I do have some purple power cleaner-degreaser that I've had good luck with in the past.

I'll check those things and report what I've found.

Thanks!

 

Yes, the Oil drain plug (LSF100040L) requires washer (ALU1403L) to seal.
These threads are NOT tapered (NPT or BSPT), so you need the washer.

 

Have you replaced the crankcase breather or is it blocked? If the crankcase breather is blocked it will force oil from the various oil seals.

Put some newspaper or brown paper under the truck and then check the colour of the oil but don't forget to anchor the paper down with some rocks in each corner.

 

THIS!!! I can almost guarantee it is this or the power steering pump finally gave up. If the spot is left front of engine it is power steering dead center or anywhere else I can almost guarantee it is a blocked breather. The running oil level is below the oil pan gasket, so nothing should leak unless there is pressure blowing it out. The only exception is the crucifix seals which are under pressure, and they seep more than they leak.