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MG MGB Technical - Ford gear oil for Type 9 gearbox

As I put up threads on Spridget and MGA I thought it might be of interest to some here too.

Ford gear oil for Type 9 gearbox.

The current Ford gear oil for "all Ford models with 5-speed Type 9 manual transmission" is -

Ford 75w90 Transmission Oil - 1790199

1 litre bottle of 75w90 transmission oil.

Ford specification:
ESDM-2C175-A
ESDM-2C186-A
WSD-M2C200-C

Compatible with all Ford models with 5-speed Type 9 manual transmission.

Around £20-£26 in the UK at the moment.

https://www.fordpartsuk.com/75w90-transmission-oil

For those that have seen enough or get bored more easily with such things stop here, for those that want a bit more detail and history carry on.

Some Type 9 builders insist on semi-synthetic 75W90 fluid to GL4 specification, in particular Ford (red dyed) oil and Comma SX75W-90 GL4, others insist on a GL4.

Both the Ford and Comma oils are to Ford spec Ford (ESD)M-2C175-A.

Going back a good few years Castrol SMX was red, 80W90, semi-synthetic, GL4, M2C-175A, "Recommended primarily for Ford Sierra and Vauxhall 5-speed gearboxes", so was the(?)/an alternative (or perhaps actual?) oil to the stuff in the Ford labelled bottle at the time (and now?).

http://www.ebay.co.uk/itm/Castrol-SMX-500ml-Part-Synthetic-Gear-Oil-Recommended-Sierra-Vauxhall-5-Sp-/123527923715

Later came Castrol SMX-S (75W-85, GL4), "fully" rather than semi-synthetic, this was then replaced by Castrol Syntrans Multivehicle at now 75W-90 with Ford spec Ford WSD-M2C200-C (remember this spec is also on the current Ford oil at start of this post).

(copy & paste link) - http://www.rgracing-oils.co.uk/TDS/Trans/SMX-S%2075w90.pdf

http://www.castrol.com/en_gb/united-kingdom/products/cars/manual-transmission-fluids.html

Personally, in my road going only modestly uprated midget, I now use Millers CRX 75w90 NT (now +), fully synthetic, GL5(!) as Millers' technical people have told me it will not cause harm to yellow metals in the box, I believe them, this is my particular oil belief, obviously you may choose to believe otherwise if you wish or not trust this info or Millers, we won't fall out over it. :)

I also use it in the rear axle.

http://www.opieoils.co.uk/p-115244-millers-oils-crx-75w-90-nt-competition-full-synthetic-transmission-oil.aspx

HTH.



Nigel Atkins

This thread was discussed on 26/01/2019

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.