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  • 2 weeks later...

BMW and Honda dealers will stock MTF94

MTF94 is a long life version of 10W40

Surely MTF-94 is a 75W80 viscocity oil to API GL-4.

Castrol VMX-S is a semi synthetic 75W80 whereas Texaco MTF-94 is fully synth 75W80.

They are both semi synthetic - a fully synthetic version is Castrol SMX-S SAE 75-85, API GL3/4.

Pricey, but works well in the PG1 tranny.

MTF94 is indeed an equivalent to a 75w/80 which is why refilling with a 10w/40 oil will give you a slicker and lighter change. Change it every 50K is all you need to do. The MTF94 has a recommended change of 120K but from experience 50K of MTF94 in an gearbox is enough to give a heavy gear change.

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  • 3 weeks later...
  • 6 months later...

Texaco were the manufacturers of original fill oil for British built Honda

gearboxes fitted to MG/Rover/Austin cars from the early 80's. There is

nothing new or mysterious about the oil.

FWIW I have used MT type oil in my LT77 gearbox for over 15 years and long

before LR decided it was a superior product. It still goes as well as ever

after over 10,000 hours of intense use. I have never used the specific MTF

[belatedly] recommended by LR but use MT oil specific for Ford MT75 [i think

it's called] made by Morris oils so as far as I am concerned the brand is

not important as long as it is reputable while the spec is most important

but not life threatening as long as it is better than ATF, which LR

recommended for many years and which provided little wear protection over

the long term.

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  • 1 month later...

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