TSHong

I was wondering has anyone researched Audi Automatic Trans Fluid. I know it is the only fluid recommended for our cars. Does anyone know what the real differences are. I talked to BG and they said Audi Fluid is not synthetic. I'm considering going to full synthetic ATF and using a flush machine to change 100% of the fluid. I just have to make some connectors to the cooler lines.

JimR

Search around, there's a thread on the following here somewhere. When Paul Waterloo met with the ZF folks in Chicago at their new rebuilding facility, they said the Esso / Audi fluid was the only stuff to use. That said, it seemed as much a "it's the only thing we've tested, and no one else will pay us to test their fluid" sort of situation.

cuatrokoop

And Jim, thanks for the pointers, I should be doing the trans. service tomorrow.

JimR

<ul><li><a href="http://zf-marine.com/Gears/D_Lubricants_4D.cfm?CFID=2348571&amp;CFTOKEN=26272 416&amp;CFApp=1&amp;Redirected=1&amp;CFMessageID=4 &amp;NSRED=4">This page, for instance, says it's mineral oil-based.</a></li></ul>

Mitaka

Audi ATF is the only one to use. Unless you want to be changing your trany

TSHong

I had a more than casual converation with my BG rep today and he called their HQ. They have actually analyzed Audi, Volvo, and other specialty ATF fluids. Upon analysis, Audi fluid is not synthetic, at least thats what their lab said. They saqid their Synthetic ATF was compatible. I'll do some more research and keep you guys posted.

When I had My Q45, I replaced all my fluids with synthetic, including differential, and it ran a lot smoother.

JimR

It's high on my action list. MobilOne in the crankcase, and I think it had Amsoil before I had it.

Wheaton

What brand and type of fluid are you going to use. What is the change interval for the diffs?

JimR

But that doesn't mean I don't think you should consider doing it.

I've got some MobilOne synthetic gear lube.

I'm at around 62k miles, which seems like a good time.<ul><li><a href="http://www.bentleypublishers.com/tech/audi/">http://www.bentleypublishers.com/tech/audi/</a</li></ul>

Wheaton

I've used Mobil 1 syn gear lube in my other cars with AWD, but am switching to AMSOIL. I'm a preventative maintenance nut too. My 98' A8 has 63k also.