Hilux gearbox and oil leak

Hi Goodsy thanks for the advice. Will investigate the rear main seal. I don't think that there is anywhere else for the oil to leak from. How long is a clutch pack good for? ....... if i'm plucking the motor for a seal maybe should look in there too?
Ciao,
Wayne.

Thanks Tuco, sorry so long replying to you and Goodsy but you know how it goes. With the oil thing, I have a LSD in rear and the front is an independent front suspension. The oils reccommended are different for each end. Toyota tell me, engine - CRF Multigrade, Rear diff - LSX 90,Front diff - 80/90, Gearbox - 75/80, Transfer - 80/90. These are all Castrol oils. Would you use The Mobil SHC 75/90 in all except for the Limited slip rear then? Thanks for any suggestions,
Regards,
Wayne.

G'day Wayne, when you mentioned notchyness and difficulty shifting gears - synthetic gear is is the answer to overcome the problem. All of our local GMH, Ford and Toyota dealerships will change a customers vehicle to synthetic if any shifting problem is complained about. I also have a Hilux with IFS and 3.0 (1KZ-TE) turbo diesel. I have put Mobil SHC 75W/90 in both diffs G/box and T/case, and the difference in shifting (especially cold) is amazing. Mine doesn't have a rear LSD.

Your obvious preference for Castrol product is noted and the relevant Castrol full synthetic for your front diff, manual G/box, and T/case is Castrol Syntrax 75W/90.

Quote from the Castrol Australia site:
" Full synthetic manual transmission, transaxle and rear axle lubricant with outstanding extreme pressure, synchroniser and high temperature performance. Recommended for vehicles that combine gearbox and hypoid differentials, rear axles of light cars and secondary drive axles (front and rear) of 4WD vehicles. SAE 75W/90, API GL5. "

For your rear LSD the spec in full synthetic for LSD's is:
Castrol SAF-XA

" Full synthetic rear axle fluid incorporating Castrol's most advanced transmission fluid technology. Engineered to provide protection at the extremes of high and low operating temperatures, it is our prime recommendation for rear axles used in competition, severe duty and long drain applications. Suitable for both limited and non-limited slip rear axles. SAE 75W/140, API GL6."
This is too heavy for your other 3 applications though. Rear LSD only.

Like I previously mentioned - any brand of full synthetic will do the job of improving your shifting (especially cold) - but I find that the Mobil products are much more widely available around Australia. Even here in a reasonable sized city like Cairns - the Castrol specialty products are only available from the distributor, while run of the mill Castrol is available even from K-Mart, Big W, Supacheap etc.

Tuco

You're welcome Wayne, if you do decide to go with Mobil SHC 75W/90 - you will use most of a 4 litre container just for the G/box and T/case on a Hilux. As your problem is the shifting in the G/box - then leave both diffs as they are, until you need to change them at service time. Obviously you wont 'feel' any difference by changing diff or T/case oil - like you do after changing the G/box.