Yet another thread about the fg ute diff, I couldn't find a topic or anyone else that had the exact same issue. I get a clunk/thud in the rear left, only when taking off in 1st. I can not replicate the clunk otherwise, if I take off using the clutch a little more I can stop the clunk. I have read several threads about changing the diff oil. Is this the first thing I should try? I don't see how a different oil could stop some obvious movement, but I'd be happy to be proved wrong here! I have no obvious diff whine either, I've listened out for it in different speed ranges, thought I heard something at the 80kmh mark but I think that was in my head, you know how you hear things only when you're trying to listen to something in particular? Any help at all would be appreciated. Edit: I'll add, 2008 fg xr6t with 88,100 on the clock.