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gear oil

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22 Nov 2012 13:12 #53908 by Skinhead
gear oil was created by Skinhead
Ok i know i need 75w90 oil for the gearbox but what does API GL-4 mean and is it important?

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22 Nov 2012 13:50 #53909 by kirkynut
Replied by kirkynut on topic gear oil
It is important as the right GL rating will not contain additives that break down some metal bushes in the gearbox, whereas the wrong one may do.

Kirkynut

The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.

My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0

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22 Nov 2012 20:33 #53937 by facade
Replied by facade on topic gear oil
As Kirkynut says, the difference is in the additives.

The most common are GL4 and GL5. GL5 is required in the axles, GL4 in the transmission.

Gl5 used to destroy the brass bushes in the gearbox, but I would have thought that this problem would have been sorted by now.

However, as Suzuki actually specify GL4 in the transmission, best to stick with it.

If it suddenly breaks, go back to the last thing that you did before it broke and start looking there :)

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22 Nov 2012 21:44 #53955 by Skinhead
Replied by Skinhead on topic gear oil
Thanks lads, ive got some carlube 75w90, thats all my local car spares sell, but it doesnt say GL on the bottle at all?

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23 Nov 2012 17:47 #54033 by facade
Replied by facade on topic gear oil
I put Carlube semi synthetic in the Toyota, silver bottle?, IIRR, it claims GL4/GL5.

Drop carlube an email www.carlube.co.uk/

I'd have thought that it should be ok, but the GL5 spec calls for more friction modifiers, so you may get an even more notchy gearchange.

There is another spec MT1 that is for lorries, and if the oil meets that it won't attack brass.

Comma do GL4 oils quite cheaply.

If it suddenly breaks, go back to the last thing that you did before it broke and start looking there :)

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23 Nov 2012 18:00 #54039 by Skinhead
Replied by Skinhead on topic gear oil

facade wrote: I put Carlube semi synthetic in the Toyota, silver bottle?, IIRR, it claims GL4/GL5.

Drop carlube an email www.carlube.co.uk/

I'd have thought that it should be ok, but the GL5 spec calls for more friction modifiers, so you may get an even more notchy gearchange.

There is another spec MT1 that is for lorries, and if the oil meets that it won't attack brass.

Comma do GL4 oils quite cheaply.


Thats the 1, ive bought it anyway so its going in! Hopefully will all be well :)

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