Gearbox, diff & transfer box recommendations HERE >

[oilman]

Getting the right oil for gearboxes, diffs and transfer boxes can be tricky, so please ask here if there is any information that you need.

To help us to give the most accurate advice possible we do need some information about your car. e.g.
Make:
Model:
Year:
Manual/Auto:
Performance Modifications:
Driving style: (road / off-road / track etc.)
Any other information that may be relevant: e.g. approx BHP if modified, any transmission problems
What recommendation are you looking for? Gearbox, diffs, limited slip diffs, transfer boxes etc

Any oil we recommend is available to buy from us (if you would like to) for delivery throughout the UK and many destinations Worldwide. We offer a really extensive range of oils and lubricants from 11 major oil manufacturers at prices much lower than the high street and main dealers. We stock oils and fluids that meet pretty much all manufacturers and international specifications. Our brands include, Silkolene, Fuchs, Gulf, Castrol, Motul, Mobil, Millers Oils, Shell, Valvoline, Amsoil and Redline.

Plus, as the Club is a member of our club discount scheme you can get discounts of at least 10% across our entire range.

To redeem your 10% club discount simply use the following club discount code at the checkout.

EXCEL

Once the code is added at the checkout you will then receive your extra 10% club discount. However this discount code cannot be used in conjunction with other offer codes, BUT the code can be used in conjunction with any of our offers on this page HERE that do not require offer codes.

Any questions please ask here or contact us via email at sales@opieoils.co.uk

Finally, if there are any products we don't stock and you have difficulty getting hold of elsewhere, let us know and we'll see if we can stock them.

We look forward to being of help!

Cheers
Tim, Opie Oils

You can also contact us by phone on +44 1209 202944
(All oils recommended are available to buy online at my web site)

[crofty1984]

Well if I can be the first to beg some info:
I have a standard 160hp excel with the manual (toyota) gearbox.
Also has the diff it left the factory with.
If it's relevant, it's been stood for 15 years.

[oilman]

Hi

A 75w-90 is the best choice for the gearbox and diff and here are the ones we have.
 
http://www.opieoils.co.uk/c-673-75w-90- ... fluid.aspx
 
If you want to go for the best, the Millers CRX 75w-90 NT, Gulf Competition, Motul Gear 300, Redline 75w-90NS and Millers TRX are ideal for the gearbox. The Castrol Universal, Motul Motylgear and Fuchs Gear Syn are all decent alternatives. The Fuchs Syn 5, Millers CRX, Redline 75w-90 GL5, Motul Gear 300 and Gulf Competition are ideal for the diff. The Fuchs Sintopoid, Castrol Syntrax Longlife, Millers TRX, Motul Motylgear, Mobil SHC and Amsoil FGR are also good choices.

Cheers

Tim

[amarshall]

Factory Spec. (as declared in the services notes & handbook) is an API GL5 spec. 75W90

[fueltheburn]

Just a note to add here as the subject of gearbox oil has been one I have been researching for quite a while having destroyed one gearbox already.
Searching through the various Supra forums, recommendation against oil high in phosphorous due to killing off many of the bronze components on the W58.
GL5 grade oil seems to be frowned upon as does heavy shock oil.
Consensus seems to be that anyone looking for longevity or running serious power through a W58 gearbox should be running Redline MT90 for the gearbox oil.

http://www.opieoils.co.uk/p-1020-red-li ... 0-gl4.aspx

[oilman]

The GL4/GL5 thing that seems to be getting more and more well known is based on out of date information. Back in the 1970s, when GL5 oils were first introduced, it was very quickly realised that the additives attacked yellow metals. That was no good to the oil manufacturer or user, so the additive pack was soon changed (by reputable oil companies) so that they use the same additives as in a GL4 oil, but in a higher concentration. That means that GL5 oils from reputable companies will not attack brass synchros. I don't know if that is the case with oils from companies that we don't deal with though.

There are certain GL5 oils that are better as diff oils as they are too slippery for synchros, but they are not attacking the brass.

Cheers

Tim