Yeah probably - I put the RTV on the diff cover, and let it sit for about 10-15mins, then stuck it back on there, torqued it down, and refilled. In retrospect, I should've let it sit until it started to skin over, then stuck it back on, gotten lunch, watched some TV, then refilled. All well - lessons learned.

As far as the viscosity goes - I'm not too concerned with the cold weight. Seeing as how the Ford stuff is 75w140 and the Redline is 80w140, it would appear that the Redline stuff will just be *slightly* thicker when it's cold out, even though the Ford stuff will easily hit the 80W mark within a mile or two down the road. In other words, since the end product is same, and the two weights are so close, I won't sweat it. Especially not in Maryland - it gets pretty hot, but not too terribly cold.

Thanks for the input, though!

XXL