P-daddy

How were your shifts when cold? I find shifts with Swepco very notchy and crunchy until the trans get nice and warm.

Spyerx

Matt @ GT Gears.... only use these if noise is an issue for you. Friction modifiers render the LSD less effective. Delvac does not have these, I don't use them. My 89 G chatters a little bit at slow speed sharp turns, otherwise no noise. Other cars make no noise.

FeralComprehension

I just changed from the Redline to the Mobil Delvac. While the Delvac is a little uncooperative when cold, it warms up remarkably quickly (I drive it in the winter; have snow tires and everything...).

The Redline worked well for me, but Matt at GT is *very* against it, in particular in tracked cars as there's not enough lubrication when the oil is hot.
$0.02
FC

Bill Verburg

+1 except to add that in some markets Delvac is called SHC, this is not going to be available at your FLAPS

Track used g50s Delvac or SHC, for street use stock Porsche trans fluid is fine, for 915 Swepco this could also be used in g50 but I'd prefer Delvac for that

LM964

TBH P-Daddy, I normally allow the engine oil to warm up for 10 minutes before I use the car. By then the transmission oil too has raised in temp. Yes, when I've used when cold (or not warmed up fully) gear changes require a tad more 'feel' - I just make sure changes are smooth. Once all warmed up it's excellent - I'm giving it plenty of beans and fast throttle blip downshifts with really great selection feel.

cobalt

The turbo is loud enough at slow speeds and reverse that you get some interesting looks like something is broken. There is a TSB about it some are worse than others. The C2 chatters a bit. I don't use them in the track car. You can't hear anything when that car is running.

Spyerx

Yeah I'm just too lazy to put another fluild in there and all my shop carries is delvac for these transmissions :-)

Bill Verburg

964turbo and 964RS were special cases. The lsd in those cars was a 20/100, that 100% nominal lockup was problematic and is probably one of the few places where friction modifiers are usually going to be wanted.

Most of us are happy w/ 40/60 to 50/80 or so

GTgears

cobalt

Thank goodness these are so loud and not for the street locker.. I agree the 20/100 is a bit overkill and prefer 40/60.

Jason @ Paragon Products

Swepco now makes a fully synthetic 75W90:

http://www.paragon-products.com/Swep...swepco-202.htm