This brings up a question. On the Novak web site I read a recommendation that the SM465 in my 1 ton be filled with non-synthetic 85W-90, but that it might shift better if filled with 50 weight. It's got 85W-90 in it now and I'm having trouble getting past the 2nd gear synchros when shifting down. Third and 4th are fine and I don't know about first.
I drove it about a hundred miles before changing the transmission oil, and I don't think there was any trouble getting into 2nd, but I don't know what was in it before.
Any suggestions? I'm probably going to re-build the tranny pretty soon because now that I have an exhaust system on it (2 1/2 inch pipes and Thrush Turbos) I can hear some noises coming from it that I don't like.
