gearbox oil, correct type is ep90 gl4 correct?

JCS1991 said:

yet every single garage I have been to has only got GL5 in stock. I hear this stuff is bad for yellow metals.
yes it is
also out of 5 garages, they have all insisted that having 15w40 in the gearbox is fine, and probably better for the syncromeshes one of these places is a very reputable place that does a lot of stuff with tractors, I find it hard to disbelieve them.
Maybe they should stick with tractors then. Buy a gallon or 10 of EP90 GL4 and do it yourself. 15W40 in a gearbox doesnt sound right to me at all, esp. as it's not a monograde oil...

so what is the story with this?

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JCS1991 said:

ok, I thought it would be better to do what the manual says. anyway does anyone know if salisbury diffs have yellow metals in them? also rover diffs?

im asking as I have a large unopened container of ep90 gl5 stuff knocking around in the shed. I nearly used it for the gearbox, but decided to search the gl5 part of it and found it was not the right stuff

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philvy said:

Dunno, but I've found GL4 before I've found the first petrol station when I was in Haslemere to buy me series. Couldnt run the engine on it tho as it was a petrol back then...

Might be different down under if your location is correct

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Taggy said:

smaller motor factor places seem to be a good bet, there are a few that stock it around the midlands and have seen in in halfrauds as well! but only seem to do 1l bottles.

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