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Best 930 LSD transaxle lube?

Hi, I am asking what everyone feels is the best oil to use in an '87 930 transaxle with a stock limited slip differential?

I have had my car since July and I don't know what oil is in it, but have the previous owners receipts that show it was rebuilt around 30,000 miles ago.
I want to change the gearbox oil soon.

It has a short shift kit in it, and shifts quite well accept sometimes it is difficult to get into 1st gear after idleing in nuetral at a light.

When it does that I don't force it, but instead shift into second and back to first to try and reposition the slider to syncro teeth so they mesh and lock in smoothly.
Sometimes I have to do that 2-3 times while people behind me get impatient waiting for me to move off.
This is an occasional occurance and most of the time the gearbox works perfectly.

In my older BMW with Getrag 5 speed, I use Redline MTL and it improves the action of that gearbox.

I asked a local mechanic if Swepco is good for the LSD 930 box and he said it would be bad for the syncros... like it is too slippery or something. He uses standard non synthetic valvoline gearbox oil.
When I worked at Gunnar Porsche in the late '80s, valvoline is what was used in the 962 box also.
He didn't have any experience using the Redline MTL in the 930 LSD transaxle, and couldn't say if it's good or bad for it.
If the Redline stuff is good for my gearbox, and if it would improve shifting without hurting the syncros or LSD, I would like to use it seeing as how it really improved the shifting in the getrag box in my BMW.
So, having said all this, what is the best oil to use in the '87 930gearbox with limited slip differential?

thanks,
Jim
Old 11-24-2006, 01:16 PM
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Wevo rebuilt my '79 930 trans w/ factory lsd & Andial 8:39 r&p. Hayden suggested using Swepco 210.
Harold
'79 930/DP935
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Old 11-24-2006, 02:56 PM
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I've been using the Redline 75/140 NoSlip and am pretty happy with it.
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Old 11-25-2006, 06:37 AM
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I have an 87 930 with 50K miles on it. I had the same problem as Fairman until last weekend when I drained the transmission and replaced the fluid with Swepco 201. I had problems at stoplights getting it to go into 1st...and sometimes into reverse. Since I've switched to the Swepco, the shifting has improved dramatically, although I think that the 930 four-speed transmissions will always be somewhat difficult to shift into 1st and require a soft touch. They don't like to be hurried, and sometimes I shift into 2nd then into 1st if it balks on me. Bottom line is that it's been much smoother and easier to shift since the switch to Swepco.
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Old 11-25-2006, 01:59 PM
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I dunno, never saw a difference with Swepco myself, except maybe a little more grinding in one of my boxes. Mobil 90wt non-syntetic is my 2nd choice.
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2001 GT3 Cup - "Pepin"
1996 993 RS Replica
2008 Yamaha R6
1971 Norton 750 Commando
Old 11-25-2006, 02:11 PM
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I have used a few and to date I like Amsoil Severe Gear the best with their Slip Lock additive. Shifts oh so nice in my 930 4spd.

Just my .02.................................C
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Old 11-30-2006, 11:20 PM
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Was in a local speed shop last weekend and they had 4 quarts of Redline 75W140 NS (no slip) @ $8.95 a quart.
I bought them, and am looking forward to see how the shifting feels after the fluid change...

thanks for all the responses,
Jim
Old 12-05-2006, 09:32 PM
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