What type or what grade of gearbox oil is used in a gearbox of a (sapphire) cosworth, 75w90 or 80w90

Greetz

 

What Sapphire mate? 2wd or 4wd?

Whichever it is, its neither of those oils, so dont rush off

 

off the top of my head i thought it was 75w90 syn

 

Fraid not mate.....

 

so what is it

 

Oil; Ford Specification SQM 2C 9010 A
2.6 Litres

Dunno what it means but there ya go

 

mtx75 4x4 gearbox takes 75w90

t5 takes auto transmission fluid (atf dexron 11)


but check with a manual

 

Ok,
Lets clear this up then

The T5 manual takes Dexron II as Gary rightly says..

However:
The MT75 found in all 4wd cosworth variants absolutely MUST be used only with special MT75 Transmission fluid.

I personally use Castrol FMT.

 

sorry stu id just looked on here.......doh

http://www.grahamgoode.com/rnr2.htm

 

No probs Gary
I recon we should ask Bernie to clear this up actually, as ive also heard that using non MT oils is ok, but i personally believe it to be a bearing material issue.

Be interesting to know once and for all from a transmission professional

 

O.K.
Cosworth T5: Dexron II
Cosworth MT75: MT75 fluid
RS2000 MTX75 up to 1995: MT75 fluid
RS2000 MTX75 1996 model up: SS75W/90

Note: I recommend the use of a full synthetic 75W/90 on "big tooth" motorsport gearsets, but on all of these boxes you will need to get the box warm before expecting a quick gearchange

 

Sorry, forgot to mention transfer boxes

Cosworth MT75 transfer: DexronII
RS2000 MTX75 transfer: MT75

 

Whilst were here then Bernie.......

Whats the difference with Dexron II and III?

Ive presumed III is a better spec but simply never used it as i dont "know for a fact"

I called Castrol Tech once with this issue and they didnt know either

 

The later Dexron III is supposedly friendlier on the solenoids of the modern day "managed" auto transmissions.
I would expect it to have a slightly higher detergent level, along with improved anti-foam properties (which is generally what the Dexrons were about)

 

So of no discernable benefit to a T5 unit then?

Thanks you Bernie. Much appreciated Info.

 

No

 

The T5 gearbox is a 2wd gearbox???
Rare question, what color is Dexron II is it blank or red like aut.transmission fluid, because the color of the oil that's now in the gearbox is blank.

BTW thanks for the reply's

Greetz

 

Yep
the mt75 is the one fitted to the 4wd cosworths

 

Its red 9 times out of 10 mate

 

I Asked because the fluid that's now in the gearbox is blank but when you guys say there must be dexron II in the gearbox then I will do that


Greetz and thanks

 

Pleased to help