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Thread: Gear Oils

  1. #1
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    Gear Oils

    Doing a service this weekend, including all the gear oils. I've had a very low drive train noise lately (could be work output shaft or worn unis as well) but also with the cold weather coming in, as usual i get a bit of a rough shift in gears and when cold i get a funny noise that sounds like a futuristic computer on old sci fi movies. was wondering if something like the link below is any good or if it's gimmick or there's better options.

    Penrite 10 Tenths Shift Eze 125ml Transmission Additive at MXstore

    bear in mind that i have already purchased all the lubricants (penrite gear oils to all the correct specs) so i can't go buying completely different product.

    any help would be appreciated, especially from a certain member that seems to be the guru on lubricants whose username starts in r and ends with a 0.

    thanks.

  2. #2
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    just as an addition, i read on the penrite website that it is not recommended where a manufacturer specifies an atf fluid in a manual gearbox. i believe landrover originally had atf in the r380?

    i asked the penrite people if i can still use the fluid even though i use pro gear now and they advised me not to use it even if the oil is different.

    which still leaves me with is there an additive worth using? and is it still worth using the above product for diffs and t case?

  3. #3
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    Hey mate, if Penrite say not to use it... Gear Oils

    FWIW the R380 was factory filled with MTF94 from '97.

    And I'm really surprised it has PTFE in it, it has its applications but from my understanding its EP properties weren't great?

    I just don't like additives, and if you have wear you have wear, a tube of fixit won't Gear Oils
    Which flavour are you using in the gearbox?

  4. #4
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    Quote Originally Posted by rick130 View Post
    Hey mate, if Penrite say not to use it... Gear Oils

    FWIW the R380 was factory filled with MTF94 from '97.

    And I'm really surprised it has PTFE in it, it has its applications but from my understanding its EP properties weren't great?

    I just don't like additives, and if you have wear you have wear, a tube of fixit won't Gear Oils
    Which flavour are you using in the gearbox?
    i told the guy it was atf from factory, incorrectly i guess and he recommended then not to use the additive. he said their recommended oil for r380 is pro gear 70W-75. i think i have 75W-85 at home and in my gearbox currently, based on recommendations from here. i think the lower winter setting of 70 is what the penrite guy was saying should help with cold shifts and shouldn't need additive.

  5. #5
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    is 70W-75 ok to use or would you recommend the 75W-85 i have? in winter you feel the shifts but its nothing too extreme. im just worried in cold temp that when still cold the oil is not swishling around enough and going into everything properly.

  6. #6
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    I'd just keep the 75w-85, the 'box is pressure fed anyway, and in summer they can get bearing rattle and the shifting can be crap with heat.

    Yes, the 70w-75 will definitely shift better initially in winter, but in my experience it was only the first few shifts for the first five minutes.
    ATF is bloody brilliant at -6°, but I hated the baulking as things warned up.
    Some R380's do shift better with ATF, but mine never did, and even 75w-85 wasn't good enough in summer.

  7. #7
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    Quote Originally Posted by rick130 View Post
    I'd just keep the 75w-85, the 'box is pressure fed anyway, and in summer they can get bearing rattle and the shifting can be crap with heat.

    Yes, the 70w-75 will definitely shift better initially in winter, but in my experience it was only the first few shifts for the first five minutes.
    ATF is bloody brilliant at -6°, but I hated the baulking as things warned up.
    Some R380's do shift better with ATF, but mine never did, and even 75w-85 wasn't good enough in summer.
    thanks for that. so did you use something higher for yours then? more than 85 i mean?

  8. #8
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    I tried that many different oils in the R380 including some really obscure, race only ones.

    My favourite all rounder was Motul Gear 300 which is a 75W-90 but due to some chemical trickery it flows better at 0 than almost anything else except ATF and NEO 7W

    Shift quality was quite good at -7*, bloody brilliant at 40* ambient and working hard.
    And it didn't shear like I found Castrol Syntrans to do, which was at end of life at 20,000km. The shift quality had deteriorated. Above 35* all the 75W-85's I tried I had bearing/gear rattle and baulky shifting, The Motul cured that.
    I never ran any flavour of Penrite in that 'box though.

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