Engine Oil In The Gearbox?
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  1. #1
    Fellow Frogger! EvilElmo's Avatar
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    Default Engine Oil In The Gearbox?

    This is in the Haynes 205 manual.
    My GTi is a june '87 build, and I need to replace the gearbox oil. Thoughts anyone?

    Engine Oil In The Gearbox?-img_7105.jpg
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    Last edited by EvilElmo; 4th July 2017 at 02:48 AM.

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    BVH Roger Wilkinson's Avatar
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    Some Land-Rover and Range Rover gearboxes use engine oil. Gearbox oil viscosity numbers do not use the same scale as engine oil viscosity numbers. The viscosity of the two oils is similar.

    Roger

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    Fellow Frogger! Bluey's Avatar
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    Either of those oils will be fine. You cant go wrong with a 75W-80 transaxle gear oil. The key thing they're recommending is that the engine oil be mineral based.

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    COL
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    Looks like you will need 10W40 or 15W40.

    I have read and heard somewhere you need to stay away from friction modified oils because these effect synchro ring function.

    There are lots of cars that use to use engine oils in the gearbox e.g. BMC/Leyland cars with FWD.

    Anyway do a little research before deciding what to use.
    Regards Col

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    1000+ Posts Peter C's Avatar
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    Quote Originally Posted by COL View Post
    There are lots of cars that use to use engine oils in the gearbox e.g. BMC/Leyland cars with FWD.

    Anyway do a little research before deciding what to use.
    And like Peugeot 203, 403, 404, 504.

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    I have a photocopy of an old French manual which says Esso Uniflo 10W 40, or Shell Super 200 in engine and gearbox. This: http://xom.ee/files/4_euxxenpvlesuniflo.pdf. There are Youtubes for oil can collectors.

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    1000+ Posts Kim Luck's Avatar
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    All the original East-West BMC front wheel drives (manuals, that is) used a common sump for engine and gear lubrication, from memory.
    Don't it always seem to go that you don't know what you've got 'til it's gone............

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    Fellow Frogger! rubyalpine's Avatar
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    My old Isuzu ute manual specified multi-grade engine oil for the gearbox. At my first oil change , I never knew this and put 80/90 gear oil in. The box got very hot and it was difficult to change gears. I then got the correct info and put the engine oil in and it was back to normal.

    Henry
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    Hi
    Actually its only in the last 50 years there has been different oils for gearboxes. Before that it was just engine oil.
    But today there are now 500 types of engine oils and people are scared into using a more expensive oil "just in case". I think oils are better but the marketing is even better still, to part the punters from their money !!!

    I worked on a ship with big slow generators, 5 cyl units 200HP. The instruction for lubing the tappets were a drop each on the tips twice a shift. They were open to the air and you had to climb up a ladder to walk along to do them !! They had done a lifetimes work at that time with that level of oiling !
    Jaahn
    PS the sump in the main engine held 5 ton of oil. It never got changed just run through the centrifugal cleaners as did the other engine oils, and topped up as it went down with 44 gal drums.
    Jaahn

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    1000+ Posts schlitzaugen's Avatar
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    That's not necessarily applicable to modern engines. Your slow revving engine didn't have to endure the strain of modern engines, which rev higher and push harder for extended periods of time. Your generator is ticking over gently at turtle pace. A modern engine would probably outlast it if it were only ever used at idle speed. Rev it at the limit and see how long would your generator engine last and compare that with a modern small capacity screamer revving at its limit. Friction is highly dependent on speeds as well, not only pressure, so that is factored in when designing lubricants.
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    What do you mean 'not necessarily applicable..?' I don't think Jaahn was suggesting we remove our valve covers and manually oil the cams every 100km.


    2003 PEUGEOT 206 GTi

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    1000+ Posts schlitzaugen's Avatar
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    I meant the oiling needs.
    ACHTUNG ALLES LOOKENPEEPERS

    Das computermachine is nicht fur gefingerpoken und mittengrabben. Ist easy schnappen der springenwerk, blowenfusen und poppencorken mit spitssparken. Ist nicht fur gewerken bei das dummkopfen. Das rubbernecken sightseeren keepen hands in das pockets-relaxen und watch das blinkenlights.

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    Fellow Frogger! EvilElmo's Avatar
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    Being half way through a cam belt/drive shaft change, the idea of an engine you can walk around on sounds mighty appealing.

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    COL
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    Quote Originally Posted by EvilElmo View Post
    Being half way through a cam belt/drive shaft change, the idea of an engine you can walk around on sounds mighty appealing.
    You better trade your Pug in on a Motor Cycle then.
    Regards Col

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    Fellow Frogger! EvilElmo's Avatar
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    Strangely enough, I actually traded a motorcycle for the Pug.

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    1000+ Posts PeterT's Avatar
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    Just use 75W-80 transaxle oil. So easy to get.

    '92 205 Mi16
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    Fellow Frogger! EvilElmo's Avatar
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    10w-40 isn't exactly rare either.
    I used penrite gear oil in my Si, works well. Tried nulon smoothshift before that, it was garbage.

    I'll probably try 10w-40 in the box and see how it feels...

    (If you can't trust a workshop manual who CAN you trust??)

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    The other reason that this issue comes up with some older cars/applications is the metallurgy in the box, whether gearbox or back axle.

    Modern EP type oils often destroy bronze and either plain mineral oil or vegetable oil is needed. The example with which most of us will be familiar is the 203,403,404 rear axle, but this applies to some older gearboxes as well ( Austin seven, ?? Light 15)

    Best Wishes


    Andrew

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    1000+ Posts PeterT's Avatar
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    I certainly wouldn't trust a Haynes manual. Recommended BE1 oil was Esso 75W-80. More recent oils will destroy the synchros. Needs to be GL-4 not GL-5.
    Last edited by PeterT; 6th July 2017 at 03:17 PM.

    '92 205 Mi16
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    sans witticism SLC206's Avatar
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    Yes, Penrite Trans Gear (for example) would be available in every SuperCheap, Burson or REPCO in the country, I would have thought.
    Regards,

    Simon

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    Fellow Frogger! EvilElmo's Avatar
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    Let's try looking at it this way, what would do more damage, heavy oil in a 'box designed for light oil, or light oil in a 'box designed for heavy oil?

  22. #22
    1000+ Posts BIGRR's Avatar
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    75w-80 transmission oil every time! (That is of course that you want smooth gear changes and the synchros to work well.)
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