@davidnunn posted:Rocky,I just noticed this.Redline MTL is 75W80Redline MT-90 is 75W90
That was a recommendation from Gary Hall. I called him for the ZF part which he had at the time. He said to try this stuff first before I took the ZF apart. I did and the issue disappeared.
There was only 32,000 miles on it at the time so it was difficult to concede that it was the second gear syncro.