944S2 Transaxle oil

[mart1922]

Just to let others know how amazed I am at the improvement Redline oil has made to my 1991 944S2 gearbox.
Changing gear in this cold weather was becoming a problem until the oil warmed up. I had been using Swepco. But I decided to use 75/90NS Redline oil. the difference is huge. The change is much smooother even on cold mornings and the well known whine has reduced.
If you have these problem give it a try. You can get it from www.twincitymotorcycles.com.

 

[TTM]

I tried the same oil in my S2 as well but did not notice any improvement - makes me think the bearings aren't bad enough yet []

I have been recommended Castrol XJ 75W140 by a German shop. Have put some in the turbo gearbox but it's only got 30k miles so might prove a bit overkill for now ...

 

[Fen]

You got yourself a proper 944 to go with the S2 now, Thom?

 

[TTM]

Bought a late turbo to tweak one comes the week-end as that bloody S2 stubbornly refuses to break down in any way [8D]

Your sig shows you got yourself a proper Porsche ?

 

[Fen]

Partially proper. Even I might argue it drives too many wheels, but that serves my purposes quite well. I was too scared to buy an older 911 like I really wanted due to the amount of corrosion so many of them seemed to have, but the C4 will be more usable in any case. Of course it's not forced induction, but if I can stop finding outlets for money in other areas I intend to address that.

 

[TTM]

What are you doing with the '44 then, leaving it in the frontyard as a memorial perhaps ?

 

[Fen]

The plan is still to get it back with V8 power, but I need to start saving for it again after buying the 964 so it will be next year some time.

 

[Big Dave]

Just getting back "on topic".. What oil is recomended to go in the LSD gearbox.????
I could do with giving mine a change....

 

[sawood12]

The spec of the gearbox oil according to the workshop manual is hypoid transmission oil SAW 75W90 (approx 2ltrs). I put some Swepco in last year after reading reports from many happy Swepco users on this forum. To be honest I have noticed no difference whatsoever so am thinking about reverting back to some sort of fully synthetic 'normal' gearbox oil as Swepco is bright electric blue and it just doesn't seem right putting something so colourful into a gearbox! I might give this Redline stuff a whirl or see what Opie Oils recommends.

 

[zcacogp]

ORIGINAL: sawood12

I put some Swepco in last year after reading reports from many happy Swepco users on this forum. To be honest I have noticed no difference whatsoever so am thinking about reverting back to some sort of fully synthetic 'normal' gearbox oil

Ahhh, the old 'Swepco' thing. It does seem to be lauded as a 'miracle' by many. Including one enthusiast who declared that changing to Swepco (from what, I don't know) made more difference to the feel of the change than a linkage re-build ...

I have never tried it (it is quite pricey), but it is heartening to hear someone say that it really doesn't do anything much different. (FWIW, it started life as an industrial lubricant in the states, and I think it is recommended for US Army tanks as a gearbox lubricant ... anyone here got a US Army tank? No? Didn't think so.)


Oli.

 

[Fen]

It's funny; I've always been slightly wary of Swepco for some reason (and hence I have never used it). I could say because it's not Porsche recommended I wouldn't use it, but then in all other areas I pretty much go out of my way to avoid anything Porsche approved where my 944 is concerned. I guess to me it has a bit of a feel of "snake oil" about it somehow (not literally of course []).

 

[mart1922]

I have tried a few oils now. First I used castrol Syntrax Universal to replace the oil I had in the car when I bought it. This did make it a little better. But then in the hope of further improvement I switched to Swepco. Bad idea as it was a lot worse, especially as the temperature outside dropped. But the Redline stuff is a big improvement. There is an equivalent for LSD which contains the friction modifiers needed for an LSD (It does not have the NS after the 75/90).

 

[Hilux]

There is an equivalent for LSD which contains the friction modifiers needed for an LSD

Any oil in an LSD `box should always be compatible with the lsd or it changes the LSD `slip properties.

 

[944Turbo]

Interesting I also tried syntrax with some improvement on previous oil, and now swepco which made it quieter but the shift is more reluctant when cold, otherwise I found it to be as good.
Tony

 

[Guest]

I tried Swepco and struggled to notice the difference. No change in transmission whine and any perceived change in feel was marginal enough to be my brain (which had decided to pay for it) playing tricks.