Transmission oil

[Christoff]

Do people generally replace as it says in the Haynes book of lies? I.e EP90 or whatever it is?

Or should I go for something heavier or something that's better for it?

[ScottieJ]

Sae 80w90 GL5

[Christoff]

Ok and would you be so kind into explaining why that is?

Iv heard slick 50 been mentioned before, apparently good for old box's.

I'm worried that I do an oil change and then make the transmission whine with the new oil which can happen I'm told...

[ScottieJ]

Sae 80w90 gl5 is a hypoid gear oil, and pretty much the modern equivalent of ep90. It's the recommended gear oil.

I've been using it for years in my diffs, tbox and in my gearbox when it had an sj gearbox.

My vitara gearbox that I run now needs gl4 or a yellow metal safe gear oil though

[ScottieJ]

From the samurai workshop manual

[Christoff]

Thanks mate quality information right there

[Edweird]

I used the same stuff as Scott