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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 by JamesD

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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.

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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.

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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.

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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.

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What problems would fresh fluid cause?

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

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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???

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