I know this will have been discussed many times but can't find a search function on the app. Just about to change all fluids on my saph 4x4 cossie. I have mt75 oil for gearbox and atf dextron 3 for transfer box. What do the front and rear diffs take? 75/90 rings a bell from the past? Thanks

 

Go here and add your reg gives you all the oils for your car - https://applications.castrol.com/oil...en_gb/c/search

 

I got a 4x4 Cos reg off Google doesn't seem to be a standard oil listed for the diffs They list a load of them!

75w90 seems to be the one searching on here

https://shop.grahamgoode.com/ford-si...rt-74970-p.asp

 

I'm sure I've used 75/90 my diffs. I even think it's in my gearbox too.

 

Found my old records, mt75 oil for gearbox, atf dextron 3 for transfer box and 75/90 for front and rear diffs