WReiter

Found plenty of info for 915, but nothing for G50.

WReiter

Update: Found a pretty good thread on Pelican that seems to indicate that Mobil Delvac is a great choice.

http://forums.pelicanparts.com/porsc...uld-i-use.html

Spyerx

Delvac (just a bit notch when cold and if you have factory LSD it may make some noise). You can add an LSD additive to it.

Motul synthetic

Motul LSD synthetic (has additive)

There are lots of others.

I run Motul & Delvac in my G50 generation trans cars (all of them).

I'm putting Motul GEAR 300 LS 75W-90 in my 89 w/ factory LSD now (haven't driven it yet!)
And have been running Motul GEAR COMPETITION 75W-140 in my GT3RS on track and it's EXCELLENT. Shift performance cold and at hot track temperatures is great. Better than Delvac by my opinion.

Most important: Change often.my track cars get changed every 6-10 or so track days.

Auto_Werks 3.6

I just switched a 944 turbo over to Motul GEAR 300 LS 75W-90, and it was a positive move. I have more on the shelf for my 911 G50, but I haven't tried it.

I know the Delvak had been the gold standard for a LOOOOONNG time, but you have to watch things like that because sometimes manufactures re formulate things like that. Have to make sure the good stuff is still in there. Not saying that's the case here, but something to keep in mind