i have an issue that is starting to annoy me. If I sit on 100 - 105klph I get a loud whining noise. It happens when cruising and goes away when under load. It's not a tyre noise, and I suspect that it's been happening for some time, but was not noticeable when I was running 33" muds. Now that I've gone back to the original mag wheels and standard original tyres, it is noticeable. I've recently changed all oils except the auto trans, and the noise remains. I suspected the belt tensioner, as I changed one at about 40thou, and now I'm at about 80thou, so I'm thinking ones due. Unlike the first replacement which screamed at idle or at reves, the current one doesn't.

This noise is different, it sounds like a diff whine, although there was no indication of wear when the oils were changed. I was thinking of doing a auto service just to eliminate that possibility.

Any ideas or similar issue from others?