doing an oil change next weekend,so might aswell do gearbox and diff at same time. what are the best oils to use and how much does gearbox and diff take. its on a my95 import wrx ra sti


cheers

 

Gearbox is easy, just undo drain plug and drain, likewise for the rear diff,

if i recall you need syntrax 3- 4 litres cost £10 a litre


Tip.... buy a narrow necked funnel youl need it for g/box


Mart

 

Well, personally, the dealers have done mine in the past ......... but now I am in the private maintenace era, and you can't buy what the Main Dealers use, I will be using this:-

http://www.commaoil.com/Product%20%2...X75W-90gl5.gif

It's £4:99 a Litre ................ I'll check that it is what Subaru recommend first, but I reckon it will be just fine!

Pete

 

don't forget you have the DCCD, some people don't recommend you put oils like syntrax in those boxes, i'll be changing the oil in box in the next few weeks too (DCCD too) and i've not found a definitive answer yet. more than likely going to be Redline lightweight shockproof.

on a side not, i've got that Comma stuff in mine at the moment, can't say i recommend it

 

do you need a sealant or anything for the drain bolts on the diff or gearbox etc after drain / refill ?

 

i need to do my Gearbox oil. what other Oil's do you guys recommend?

Cheers
G.

 

Why might that be, then??

And what is a 'side not'???

Pete

 

I ran the same type of 75/90 Comma oil in my gearbox as Kev for about a week (1000 miles back then) before I changed it for Syntrax.

The gearbox felt dreadful with it in; the transmission was noisier, it was reluctant to change gear, I kept catching the syncros and, to cap it all, this all got worse as the gearbox warmed up! All these problems disappeared the moment I changed it for Syntrax

I'll be switching from Syntrax (can't seem to get it anywhere) to Millers CRX at the next change, which was very reasonably priced from AS Performance

 

Thought you have a supra now m8?

 

Cheers, i will look into that.

G.

 

cheers think i will try millers crx75w90 for gearbox would this be ok for diff or would crx ls 75w90 bm be better


thanks for help

 

BM stands for Black Moly DO NOT put this in a syncro gearbox, viscous LSD or ATB/Helical Differential! It's designed for use in Dog engagement gearboxes only!

75/90 is fine for regular use, I'm using 80/140 because of the use I put my car to (sprints, hillclimbs and drag, with a 2.5 based engine) but I had no problems with 75/90 when my car was running around the 350/310 mark with a stock UK 5 speed despite the abuse it got!

 

I use a new sealing washer on the gearbox drain plug and 11/2 turns of gas spec PTFE tape on the diff drain and fill plugs.

 

thanks
thought it might need something especially on the rear diff, i take it they are tapered bolts ??

 

so which oil is used in the diff then? and how hard is it to do?

 

Same oil in the rear diff as used in the gearbox

 

that's if you have a viscous rear diff, thought it was different for a plated rear?

 

got some millers crx how much oil for gearbox and how much for diff ....................
cheers

 

3.5 to 4 litres for a 5 speed gearbox
4 to 4.5 litres for a 6 speed gearbox
0.8 litres for an R160 differential
1 litre for an R180 differential

 

thanks tim w will get job done on sat now,what size of washer do you need ror gearbox drain plug

 

Newbie question...

Is the Front Diff part of the gearbox? I guess the same question for the DCCD too....

Alex

 

Yes, the front diff is inside the gearbox and the DCCD (and for that matter the viscous centre differential) is on bolted on to the end of the gearbox...

As Danny's pic here shows, the front diff is inside the main gearbox casting, on the right hand side:

 

so what do those people recomend?

Alex

 

Had a plated diff in my 97 RA, it started to make loads of noise when i crossed the line at a Pembrey Sprint a few years ago. Had it stripped and checked the Guy said it had run a bit dry at some time !!!. Possibly on a wild corner, I had filled it up to the filler level plug,( possibly .8 or less ) so now I put 1.0 Ltr in with a syringe with the nose down just to be safe. As yet nothing has blown out and the saels are OK

 

anyone ^^^^^

what oil is recomended for a DCCD?

 

The same as a non DCCD box, as in a good quality 75w90

 

thank you

 

Use a special LSD oil for an RA!;
See

http://www.hampshiresubaru.co.uk/php...pic.php?t=3115
and
http://www.hampshiresubaru.co.uk/php...pic.php?t=2680

Regards.