Daiberl

I read a couple of threads about transmission oil here but I'm still not sure what to use for my 1999 C2. I have the problem with the 2nd gear, it pops out from time to time so I thought I will try the Redline 75W90 Oil which I read sometimes helps. Redline offers a 75W90 GL4 and a 75W90 NS which is GL5. Can someone tell me what the better choice is? Do I have to use GL5 or can I also run GL4???

Thanks,
Juergen

Daiberl

Hi,

I really could use some help here, can I use GL4 transmission oil or do I have to use GL5???

Thanks,
Juergen

1999Porsche911

Just use the Shell transaxle lube you can get from the dealer. $90 for 3 bottles.

JCL

I recently drained my gear oil and used Swepco 203, things are very smooth and very quiet.

Bijan

Or you can use Mobil 1 synthetic gear oil:
http://www.mobil.com/USA-English/Lub...licationsTitle
It is pricey

Ubermensch

In correspondance with Mobil they confirmed that their synthetic gear oil does NOT meet Porsche's standard for their MT.