Another oil thread (Diff & gearbox this time)

[ascari]

Research has found Redline MT90 for the transmission, 75W90 in the diff. Has anyone got any recommendations. I'm trying to remove any notchiness in the gearbox, sometimes the synros are a bit slow until it's warmed up.

 

[ascari]

Come on guys... Someone must be putting something in!

 

[cib24]

Redline MT90 in the manual box and Redline 75w-90 in the diff.

 

[Matas Sim]

I use Motul for all liquids of my car. Foe gearbox and diff Motul Gear 300 75W-90 Fully Synthetic Car Gearbox & Diff Oil.

 

[cib24]

That works too. Get the right weights and give it a go. I did try Miller's nanodrive for the gearbox and wouldn't recommend it. My car shifts way better with the Redline oil in my car.

 

[JoeLanger]

I tried to find an alternative to redline for the gearbox, but it has to be GL4 as the syncros are brass, but alot of brands don't say if it's GL 4 or 5 so redline was then the best option.
I use mobil one oil for the diff but you could get any for that.

 

[JonFD]

I tried to find an alternative to redline for the gearbox, but it has to be GL4 as the syncros are brass, but alot of brands don't say if it's GL 4 or 5 so redline was then the best option.
I use mobil one oil for the diff but you could get any for that.

I'm using Royal Purple 79-90 for the gearbox, (advice form EssexRotary)

Any Idea if its GL5? Ive had a few drivetrain problems so if not I'll swap it out for Redline..

 

[Matas Sim]

Motul gear 300 is meets gl4 and gl5.

 

[ascari]

I'm using Royal Purple 79-90 for the gearbox, (advice form EssexRotary)

Any Idea if its GL5? Ive had a few drivetrain problems so if not I'll swap it out for Redline..

what problems have you been having?

 

[JoeLanger]

I just couldn't be arsed looking into every oils spec to find which one was gl4 or not. So the clever guy in marketing who put it on the front of the bottle got my business. The red line stuff isn't that much dearer than anything else anyway.

 

[JonFD]

LOL Fair enough, I don't have a bottle to check but after a google I cant find a mention of GL for Royal Purple.

what problems have you been having?

The box was rebuilt twice whithin a month lol. First time was for syncros and bearings, the second time it stuck in gear 2 weeks after it was re-buit.

That was covered by warranty from the place the did the box, and they paid fitting labour too. Cost them more than it did me in the end.

Rather have the right oil after what Joe said now, but it's been perfect since anyway.

 

[ascari]

LOL Fair enough, I don't have a bottle to check but after a google I cant find a mention of GL for Royal Purple.



The box was rebuilt twice whithin a month lol. First time was for syncros and bearings, the second time it stuck in gear 2 weeks after it was re-buit.

That was covered by warranty from the place the did the box, and they paid fitting labour too. Cost them more than it did me in the end.

Rather have the right oil after what Joe said now, but it's been perfect since anyway.

good to hear it's sorted... magical things gearboxes are. in case i need to budget for it, how much was the rebuild labour?

 

[JonFD]

good to hear it's sorted... magical things gearboxes are. in case i need to budget for it, how much was the rebuild labour?

The place charged £350 for doing the box - they didn't fit it they're only a gearbox and diff builder so no ramps etc.

I doubt it's a thing many will need to do tho, my car crunched hard into second sometimes when i first got it, wasn't consistent at first but gradually got properly bad.

 

[ascari]

The place charged £350 for doing the box - they didn't fit it they're only a gearbox and diff builder so no ramps etc.

I doubt it's a thing many will need to do tho, my car crunched hard into second sometimes when i first got it, wasn't consistent at first but gradually got properly bad.

sounds a deal. my synchros are slow when cold. hopefully the oil suggested in this thread will resolve it.

 

[rob fd]

sounds a deal. my synchros are slow when cold. hopefully the oil suggested in this thread will resolve it.

Might make it a little better but i wouldn't hold your breathe. Mine is notchy when cold but goes away once warmed up. Also running the redline stuff in box and diff.

 

[ascari]

Might make it a little better but i wouldn't hold your breathe. Mine is notchy when cold but goes away once warmed up. Also running the redline stuff in box and diff.

oh

 

[cib24]

Can't go wrong with redline and I don't say that just because it's American made.