Gearbox Oil Query - Disco/RR/Defender

Land rover now sell MTF. Whilst I can't comment on the R380, it's the current reccomended lube for the LT77. I suspect after using it though it's basically a thin fully synth engine oil though, as it has none of the sulphour smell associated with EP oils. I know from a technical point of view that ATF is at best poor in the lubrication department. I am now thinking of trying a propper fully syntyh light EP oil, which whilst not cheap should not need changeing so often.

Just done my R380 @ 96k 110 CSW; thought I'd get recomended LR badged goods and they gave me MTF badged as LR Oil. 4.5 litres roughly if I remember, neded a big ring spanner 32mm as the prop shaft fouled the socket set.

Hi Alex,

I think you need to identify your gearbox first - was it changed when the Defender engine was fitted?

I've just googled, and assuming that it is a 5 speed unit, it seems that LT77's were used from 1983, until the R380 came out in 1994. I know the R380 uses ATF, and I'm sure someone on this group will confirm the LT77 oil, though Ashcroft Transmissions says use ATF Dextron II.

Cheers! Graham Carter Harare Zimbabwe