Transmission Oil Change

[JamesD]

So I was thinking of changing my Gear box oil, my 996 6SP has 73000miles nearly on the clock,

new motor about 3000mile's ago. But I have been told by my indy to wait because Gear box oil change's it can sometime's cause problems?

Is this true...

Whats the process, is it a big job to change and whats the best Transmission Oil to use.

Thank's to all in advance.

Edited June 25, 2009 by JamesD

[SH-GT3]

What problems would fresh fluid cause? IMO, that's Bull. I've heard this wives' tale before, but mostly regarding automatic transmissions.

Factory interval is 90k. For my own peace of mind, I cut that in half. Use the factory fluid.

[1999Porsche911]

What problems would fresh fluid cause? IMO, that's Bull. I've heard this wives' tale before, but mostly regarding automatic transmissions.

Factory interval is 90k. For my own peace of mind, I cut that in half. Use the factory fluid.

If I drove an automatic 90,000 miles with original fluid, I would either not chenage it, or if compelled to do so, only change out about halpf of it at a time and the other half only after another 6 months or so if I find there has been no negative effects of the first change.

If you think its BULL, then go and change it all and the filter. IME, you have about a 50/50 chance that your transmission will not function as designed.

[SH-GT3]

Let me clarify:

So I was thinking of changing my Gear box oil, my 996 6SP has 73000miles nearly on the clock,…But I have been told by my indy to wait because Gear box oil change's it can sometime's cause problems?

If I drove an automatic 90,000 miles with original fluid,…

We’re not talking about an automatic. His indy told him - well, read it - that's what I am saying is Bull.

[1999Porsche911]

Let me clarify:

So I was thinking of changing my Gear box oil, my 996 6SP has 73000miles nearly on the clock,…But I have been told by my indy to wait because Gear box oil change's it can sometime's cause problems?

If I drove an automatic 90,000 miles with original fluid,…

We’re not talking about an automatic. His indy told him - well, read it - that's what I am saying is Bull.

You can change gear oil at any time and mileage and it will all be good.

[typhon]

What problems would fresh fluid cause?

+1 on that. what could possibly be the downside?

[JamesD]

Well guys,

I think my indy think's, it's not nessasary not before 90K anyway

I have heard this tale before, (if it's not broking) but only for AUTO's mine's a MANUEL 6SP :D

Anyway I got a recondition engine installed about 3k ago, so I wonder if it was done then?

(don't think so different garage at the time they where cowboy's)

Is it a big job to change the oil on a 6sp box???

[phillipj]

I doubt they would have changed your trans oil unless you requested it. Agree, stick with the factory fill if you change it.

Here is the link for the DIY.

http://www.renntech.org/forums/index.php?showtopic=7060

Edited June 26, 2009 by phillipj