Gearbox Oil - LT77 Box
Discussion
Hi,
I was looking into checking and topping up my gearbox oil on my 'M' series fitted with a Rover V8 with a LT77 gearbox. The problem is that on doing some research that there are several different oils recommended by different people, including the following:
- Castrol SMX (Fully Synethic)
- Castrol TQF
- EP80
- Dexron III ATF
Does anyone know what is most appropriate for the LT77 Rover gearbox?
Cheers,
Tony.
I was looking into checking and topping up my gearbox oil on my 'M' series fitted with a Rover V8 with a LT77 gearbox. The problem is that on doing some research that there are several different oils recommended by different people, including the following:
- Castrol SMX (Fully Synethic)
- Castrol TQF
- EP80
- Dexron III ATF
Does anyone know what is most appropriate for the LT77 Rover gearbox?
Cheers,
Tony.
what i was told by a reliable gearbox company ,was that the gearbox is normally run on the thin red stuff to make the gearchange easier ,particularly when cold ,but that this increases wear bearing wize . they recommended runnig a heavier gear type oil to protect the bearings ,and so i run on synthetic 80/90 weight . i dont find it a prob gear change wize. regards robert
Hi Guys, I always use a good quality TQF oil (the red stuff), as the LT77 has an in built oil pump.
If you go to a thicker ep type of oil the pump can over pressurise either blowing the seals or dumping oil from the breather on the top.
Yes, some people do use the thicker oil, but gearchanges can be stiff when cold, and this slows down the synchro`s and bulkrings giving other problems.
The EP oil is normally installed to compensate or hide wear!
Cheers Roy
If you go to a thicker ep type of oil the pump can over pressurise either blowing the seals or dumping oil from the breather on the top.
Yes, some people do use the thicker oil, but gearchanges can be stiff when cold, and this slows down the synchro`s and bulkrings giving other problems.
The EP oil is normally installed to compensate or hide wear!
Cheers Roy
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