Oils - What should I be using? - Recomendations

A

alimorg

New Member
HI All,
Just a quicky, will be giving my P6 ('75 3500s 4 speed) a thorough going over in the next couple of weeks, I want to change the oil in the engine gearbox and diff.
I am sorted on the engine front, but what oils should I use for the Gearbox and Diff? Millers trans M sport has been reccomended on here in the past for the box, anyone got any comments? and how about the diff, I have a load of castrol B373 left over from the Capri (V expensive, but cured a groaning LSD) could I use this?
Cheers
AL
 
Yep, consider Millers Trans-M, or Trans M-Sport for the gearbox. (It worked beautifully my 'S' gearbox).

Not sure what grade/spec the Castrol B373 is, its probably best just sticking to the recommended oil for the diff and like the gearbox oil - change it regulary.
You cant go wrong with something like Castrol EP90. Maybe adding Molyslip if you desire.

Just make sure the car has a good run to warm through the oils before draining. And remove the filler plugs before attempting to undo the drain plugs.
 
Thanks for that Peter,
I have gone for the millers for the gearbox, and I got some millers for the diff as well (Having looked at the castrol I don't think it will be suitable It is intended for 'Racing use only' Ho hum anyone want 2.5 litres of B373 for a competition limited slip diff?)
Cheers
AL
 
Hi All,
Well what a transformation, having changed all fluids in my 3500s I can highly recommend Millers Trans M or Trans M sport for 4 speed manual boxes, The notchy change and difficulty engaging second has completely vanished, the box is also noticeably quieter - this is probably just down to new oil in the box, but I thought I would mention it
Cheers
Al
 
Mnnn - My rover book states engine oil for the gearbox? - Is this OK?

Im abroad so never seen Millers oil. - What is the spec of it so I can search out alternative if necc.

Thanks
 
Use a 20W-50 motor oil in the gearbox. Change it at least yearly.

Millers Trans-M (+ Trans-M Sport) is a 20W-50 motor oil with EP additives, mainly designed for shared engine/gearbox oil such as in Mini's or boxes that use engine oil, i.e. ours.
Its highly suitable for the 'S' gearbox. Use it if you can get hold of it.
 
You must log in or register to reply here.
Back
Top