What's the best Gear Oil and Tranny Fluid for a 944 Track Car?
05-03-2007, 01:06 PM
#16
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Originally Posted by Z-man
FWIW, I use Swepco synthetic tranny fluid in my car that sees a fair amount of track time...
05-03-2007, 01:49 PM
#17
Race Car
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Originally Posted by SD Porsche Fan
Anyone use Amsoil?
But with the amsoil 80/90, so far so good.
05-03-2007, 06:19 PM
#18
Cast Iron Man
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Originally Posted by knfeparty
Yeah, I put some in about 2 weeks ago. It's definitely been an improvement over the non-synthetic no-name brand that was in there for about 4 weeks in a pinch (car was way low when I got it). My mechanic did say something about GL-5 being too slick for the syncros, as well.
But with the amsoil 80/90, so far so good.
But with the amsoil 80/90, so far so good.
05-03-2007, 08:54 PM
#20
Race Car
I tried Redline, Swepco, and Mobil 1. I would rate them in that order and redline is the best overall especially in smooth shifting. I think their formulation works with the friction material in the synchros better than the other oil thus the result.
05-04-2007, 03:57 AM
#23
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Legoland951, to which Redline gear oil are you referring? Does either the Redline or Swepco gear oil require a friction modifier when used with a LSD?
05-04-2007, 12:26 PM
#24
Race Car
I use their 75/90 and MT90 but you do have to specify whether its LSD or not as they do have an additive for their LSD oils. Its been a while since I had to buy more because I spent about $500 a few years ago and bought 4 cases (48 qts). I tried Swepco and did not have it in a LSD tranny so I don't know about their oil compatibility with LSD. I tried Mobil 1 a couple times and hated it.
