Attention: TDR Forum Junkies 
Just finished a 700 mile trip towing my travel trailer and noticed after long pulls in fifth gear transmission seems noisier than when cold. transmission is currently filled with Mobil 1 75-90. transmission shifts smooth and is also over filled about 1 quart. I am thinking about making a switch to Redline 85-140ns for extra protection in these high heat conditions. The ns oil is gl-4 without limited slip additive. Anyone else running heavier oil? Thanks. 
