Diff. EP140. GL4. Suitable brand?

[chrishawley]

Time to refill the diff (Spit 1500). If any is still left it will be EP90 GL4. So my reckoning is to put in a straight EP140 GL4. Any recommendations for a suitable brand?  Or, as much to the point, any rip offs to avoid?

I note previous vibrant exchanges on the issue of GL4 v GL5. Can I assume that GL4 is still the safe, 'don't worry about it',  bet?

 

Thanks

[Mjit]

Any GL4 oil won't have additives that attack phospher bronze.
A GL5 oil might or might not have additives that attack phopser bronze.

Any reason to use EP140 rather than EP90 though?

[Colin Lindsay]

I use Dynolite, supplied by James Paddock. Seems to give a quieter diff.

Even if it's proven not to, it makes me think it does, so that's half the battle in itself.

[NonMember]

52 minutes ago, Mjit said:

Any reason to use EP140 rather than EP90 though?

Marcus the diff man recommends it.

It does help reduce the diff noise and keeps working better on cars that are driven hard.

[Pete Lewis]

Im a firm believer for normal usage  do what triumph designed and the car does what it says 

i have used a EP140 GL4 in the 2000 diff and yes its improved 

whilst |GL4 is very available why bother with any thoughts about using a GL5   and the risk that may develop 

pete

[johny]

Well I thought the conclusion was that if youve seriously increased the power being transmitted by the diff GL5 has more of the additives that protect against wear so it could be beneficial. However then some do use additives which can damage yellow metals.... 

[chrishawley]

1 hour ago, Mjit said:

Any reason to use EP140 rather than EP90 though?

Only that since I've got to fill it anyway 140 might just make it a bit quieter.

[daverclasper]

On 08/08/2022 at 17:45, chrishawley said:

Only that since I've got to fill it anyway 140 might just make it a bit quieter.

And "quieter", = less wear I guess?

[Badwolf]

Just ordered some Comma. Gets good write ups from several people.

[Pete Lewis]

just dont use it in the gearbox  that would make the synchro rings struggle to cut through the oil

Pete

[Nigel Clark]

I've used Comma EP140 GL4 in the diff of my Scimitar.  The rattly Salisbury axle is noticeably quieter. 

Nigel

[Iain T]

Redline heavy shockproof 75-140 works well in my Vitesse. Redline seem to have very good reputation. 

Iain 

[SpitFire6]

On 14/08/2022 at 13:19, Iain T said:

Redline heavy shockproof 75-140 works well in my Vitesse. Redline seem to have very good reputation. 

Iain 

Hi Iain,

Redline heavy shockproof 75-140 is a GL-5 Oil & likely to offend people.
😁

A good choice for a Diff.

Cheers,

Iain.

[Iain T]

10 hours ago, SpitFire6 said:

A good choice for a Diff.

Yes I only use in my diff, there is another Redline product MTL for my T9 gearbox which is GL4. At the moment I use Comma in the gearbox. 

Iain