gearbox oil

[Lemon]

I used Swepco and was very pleased with it []

 

[Peter Empson]

Definately worth changing the gearbox oil in my experience, I have mine done every year or two and it seems to make a worthwhile difference to the shift quality. Personally I can't say I found Swepco to be any better or worse than the others I've tried, but I know many others have had good results and supporting Bert at Berlyn (for the Swepco) or the guys at Opie (for everything else) is always a good move.

 

[George Elliott]

Ian,
I changed it at about 90k miles, they whine a bit so good oil is important perhaps?
On the same subject the CV Joints get a bit dry, you may consider repacking the grease in them
George

944T
964

 

[zcacogp]

Did mine at about 120k, with synth stuff from a local Vauxhall dealer (chose the spec that matched the one in the workshop manual.) It cost about £8 for two litres (trade price.)

Didn't make any difference! But gave me peace of mind that my toy was being looked after well (bless!)


Oli.

 

[Wigeon Incognito]

After doing a bit of reading up on this and other forums, I chose to use Red Line 75w90 NS.

It made a positive change to shift action, but didn't make any change to my transmission noise.

Mine came from Fluke Motorsport whose service was excellent, even managing to arrange quick delivery when they were out rallying in Barbados. It is sold in quarts rather than litres though so you'll have to buy three bottles.

Then again, using most peoples fill method (fill until you see it coming out rather than a little way below the fill hole) you would need more than two litres anyway.

 

[ians]

Thanks all - sounds like a job worth doing.

George - can you just release the gaiter to repack the CV joint, or is there more to it?

zcacogp - do you know which Vx stuff exactly you used? I have a Vx trade club card but not a 944 workshop manual. I'm pretty sure it should be 75W90, but no more than that.

 

[zcacogp]

Ians,

Listed on the invoice as S100000093165290 OIL2B TRANSM. OIL

4.03p each. Container was almost certainly a Castrol one, so I expect it's a Castrol product.


Oli.

 

[Diver944]

ORIGINAL: ians

Thanks all - sounds like a job worth doing.

Definately.

The service interval is 48k miles or four years (though I personally change mine every 2 years as fresh oil is far cheaper than a gearbox rebuild).

Yikes, if a car really is on it's original oil [&o]

 

[C50]

2 litres of sae 80 in my 2.5S driver's manual. Remember to use GL4. GL5 is not backwards compatible and will eat through the synchros []

very difficult to find fully synthetic sae 80 too. I'm weary to run multi grade 75w90 incase it causes resistance in shifting when cold

 

[dave364634]

http://forums.tipec.net/viewtopic.php?f=25&t=5684&view=previous

seem to recommend

http://partsforporsche.co.uk/osc/swepco-gear-80140-p-1192.html

 

[944 man]

Two litres wont fill it: Id expect it to take a shade over 2.5l. This mistake was introduced in series two handbooks (from 2.6l) and it wasnt ever corrected.

 

[tr7v8]

ORIGINAL: dave364634

http://forums.tipec.net/viewtopic.php?f=25&t=5684&view=previous

seem to recommend

http://partsforporsche.co.uk/osc/swepco-gear-80140-p-1192.html

Me being one of them! Probably one of the most significant changes made to the car. The change quality & lack of noise was amazing.

 

[pauljmcnulty]

Swepco gets a lot of recommendations, but so does just changing the oil. I'd say the same as with the engine; any decent oil and change it regularly.

And, check you can remove the filler before the drain.

 

[jmelhuish]

Hi. I used this

http://www.design911.co.uk/fu/pt376_1019_-cma81-cmo123/Porsche/944-1982-91/Gearbox-Oil/

Did a great job

 

[dave364634]

so either of the oils in my first post will do the job, and i must avoid gl5?

 

[tr7v8]

ORIGINAL: dave364634

so either of the oils in my first post will do the job, and i must avoid gl5?

Yup & I'd go with a semi or full synth if you can

 

[Paul 290T]

Hi,

I went from Castrol Syntrax 75W90 to Swepco. You could class the Castrol as being the correct spec of oil, whereas Swepco is a thicker lubricant, recommended by enthusiasts for our gearbox.

My car is a 220T with LSD and external oil cooler factory options that's done 75k. Second gear synchro is worn.

Driving away cold the Castrol requires less force to affect a gearchange.

After driving for 10-15 mins the Swepco warms up. The Swepco gives a smoother and slightly lighter change once warmed through than on Castrol.

Its a heavy change down into second. Since switching to Swepco I've always preferred to double declutch my changes until the gearbox oil has warmed through as it is a lot lighter thereafter.

I find that changing up gear in excess of 3000rpm gives a lighter change than my pootling around mode where i change up at 2000rpm. In fact above 3000rpm I really like the weight and feel of my cars gear change.

I bought the Swepco from Berlyn Servicees, many years ago, so can't advise on price.

 

[zcacogp]

Much is spoken about gearbox oil. When I looked, Swepco was an industrial lubricant that can also be used in the gearboxes of military tanks, and made vintage champagne look cheap. Not helped by the fact that you could only buy it in large containers; more than you need for one change but not enough for two.

I use a good quality regular oil for around £4/litre and change it every couple of years (needs to be done again). That's in a road-going S2, driven enthusiastically.


Oli.

 

[geoffbateman]

Thank you both for the information.

 

[pauljmcnulty]

Whatever you choose, make sure you take the filler out before you drain the gearbox. The drain is well lubricated and comes out easily, the other tends to be a pig.