Gotta love anecdotes :-) Unfortunately, there are always people who like to equate them to "facts".

We change the (various) fluids in our construction and forestry equipment for very simple reasons - it's cheap maintenance. We can leave it, sure. And we can hope that the hydraulic systems will not suffer because of that. But since there is an awful lot of money that we frankly can't afford to gamble with wrapped up in the kit, we do what we can to hopefully reduce repair costs.

Personally, I see that as a very similar position to the ZF transmissions.

But hey, I'm just a simple bloke with some old fashioned ideas who is quite happy to spend a few dollars on preventative maintenance in the hope of avoiding something more serious down the track that I could very well have avoided.

Just makes me laugh how some of the "anti-fluid-change" brigade are so vociferous in their desire to convince others not to do it.

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Cheers,

Anthony