Gearbox issues and oil

In the IRD I am using Valvoline DuraGear Synthetic Blend Gear Oil SAE 75w-90 API GL5 - the book specifies Texaco S5 75/90 API GL5 - so I assume this is the equivalent.

For the gearbox, the book specifies Texaco MTF 94 but I cannot locate any Caltex MTF 94 but the Castrol book lists Syntrans 75 - actually using Castol Syntrans 75W/85 Manual - a synthetic API GL4. The bottle specifically states it is not suitable for engines, hypoid differentials or GL5 applications.

I am afraid I am a bit of a babe in the woods as far as oils go and have been following the manual specs.

These seem to be OK for the Freelander - I am about to do a 100,000km service on my Disco 1 update and though a geabox oil change is not due, in view of the comments on this forum I was going to change the ATF to MTF 94 which I cannot locate so I was intendng to use the Syntrans 75 as it seems to be the Castol equivalent which I can get.

Gazz

I think you will find that the Dura gear 75/85 gl4 will be fine in the box It's certainly fine in an R380 or LT77, it's all MR automotive use here in Brisbane and they reckon they've tried all the mineral based MTFs. MTF 94 is just 75/80 GL4 mineral nothing special about it, I wouldn't loose any sleep over it. Just make sure you get the Dura gear GL4 75/85 not the 90, the bottle looks exactly the same. My own Disco has run it for 100k km changed every 20, Box still feels/sounds the same as the day as I got it. The car has towed boats and vans up the beach and on road. But if you don't mind paying for Syntrans go for it. But you can get Dura gear at Supa Cheap. Thompsons Auto parts here in Wynnum sell the lot, every thing from Redline to VMX80.

just did a full oil change and used penrite 75/80 (new name for extra light) instead of the ATF that was in there...
gearchanges feel a little even smoother...and was available at both Supercrap and autobarn...
It even lists Land Rover on the bottle as 1 of the applications.... which is pretty rare 8)

Quote:

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Originally posted by rick130
the easiest place to buy Caltex MTF94 is from a Land Rover dealer, as the minimum buy quantity from a Caltex depot is 20 litres.

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Given the price that some dealers want to charge for MTF94 its not much dearer to fork out $120m for 20litres from Caltex.


Bushie