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Thread: Gear oils in Defender 110 - EPX80/90?

  1. #1
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    Gear oils in Defender 110 - EPX80/90?

    Hi All

    The owners manual specifies API GL4 or 5 and 80W or 90 EP fluid for both differentials, transfer case and swivel pin housings. The castrol listing for this application is EPX80W/90.

    Before I put these in are there any major objections to this fluid?

    Anyway I often see major contraditiocns and discrepencies in the recommendations. Like the manual transmission in the car, r380, has a recommendation in the owners manual of ATF M2C33-F or G, and the castrol lisitng for the R380 is Transmax M but castrol then describe this fluid as:

    "Castrol Transmax M is a mineral based Automatic Transmission Fluid (ATF) suitable for most transmissions, except where Ford M2C-33 fluid or other specialists fluids are recommended."

    ie Transmax M is not suitable where M2C-33 is called for and yet M2C-33 is specified by Land Rover!

    So I guess the second question is, what to put in the R380 box?

    I have seen here on these threads people talk of oil thinning etc in their gearboxes. How do you know oil thinning is occurring? Do you have a temp gauge? Or is it from experience in the feel of the unit? Or do you quickly get on the ground and take a sample of oil and then what? Rub it between fingers? Or you have some test rig?

    ok bye

  2. #2
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    I use Castrol EPX80/90 in my diffs,transfer and swivels with no problems yet.

    I tend to fill the rear up a little more as the bearings are oil lubed.

    As for the R380 I use CASTROL SYNTRANS 75W/85.

    Have a look here select make,model and year (read the notes at he bottom).

    Castrol Australia - NetLube
    Aaron & Jacinta
    1994 300Tdi Defender

  3. #3
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    toc_bat I don't know if you know but we have a section on here called The Good Oil where people (mostly Pedro_The_Swift ) group more definitive information, kind of like a database.

    This post is probably a good start for oil information.


    James.

  4. #4
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    Quote Originally Posted by MacFamily View Post
    I use Castrol EPX80/90 in my diffs,transfer and swivels with no problems yet.

    I tend to fill the rear up a little more as the bearings are oil lubed.

    As for the R380 I use CASTROL SYNTRANS 75W/85.

    Have a look here select make,model and year (read the notes at he bottom).

    Castrol Australia - NetLube
    What he said.

  5. #5
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    Thanks for that Mac. And writing of swivel pins, how much oil do they take? In the manual it says 350ml but it also says to fill them till oil is level with the filler plug, well i poured in maybe 500ml and oil was still not overflowing at the filler plug.

    ok bye

  6. #6
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    Quote Originally Posted by toc_bat View Post
    Thanks for that Mac. And writing of swivel pins, how much oil do they take? In the manual it says 350ml but it also says to fill them till oil is level with the filler plug, well i poured in maybe 500ml and oil was still not overflowing at the filler plug.

    ok bye
    Oh oh, too much oil.

    Early swivel housings had a fill, level and drain plugs.

    Later housings (where LR used 'One Shot' grease instead of oil) only have a fill plug so you have to dip the swivel to check the level.

    You need to turn the wheel to full lock to get a piece of wire past the swivel ball when trying to dip it.

  7. #7
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    Quote Originally Posted by rick130 View Post
    Oh oh, too much oil.

    Early swivel housings had a fill, level and drain plugs.

    Later housings (where LR used 'One Shot' grease instead of oil) only have a fill plug so you have to dip the swivel to check the level.

    You need to turn the wheel to full lock to get a piece of wire past the swivel ball when trying to dip it.
    thanks rick, actually when I was doing the job there was a bolt there that looked very much like a plug, perhaps i have the early type, it is a 1994 defender 110. Or if I have the later type that needs a dip stick then what should the height of the oil level be? or should i just re do it and stick to 350ml? bye

  8. #8
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    The 1994 models have a 7/16" bolt next to the steering stop that is the level plug. Fill until it dribbles out.

    JC

  9. #9
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    Quote Originally Posted by justinc View Post
    The 1994 models have a 7/16" bolt next to the steering stop that is the level plug. Fill until it dribbles out.

    JC
    thanks, yes that makes sense, i thought it looked like a plug and that big ugly bolt that looks like some previous owner has made a some home cooked modification is the steering stop!

  10. #10
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    update, well i opened the level plugs and only an insignificant dribble, maybe a teaspoon worth, flowed out, so they took around 450ml,

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