3 replies to this topic

[coopdog]

what is the best grease to put on the drive shafts?
im talking about where it goes into the diff, im changing the rubbers
thanks

[jaydee]

I've been using LM or the grease that comes in the sachet from unipart.
I think any moly grease will do.

[tiger99]

If you mean in the pot joints, standard "moly" grease is NOT suitable and will seriously shorthen the life of the joints. The drive is transmitted through point contact between the balls and the inner and outer members, and the contact pressure is very high. Any normal lubricant will be squeezed out, allowing metal to metal contact.

The proper grease is molybentone based. The moly (molybdenum disulphide) is the familiar lubricant, but the bentone, derived from the mineral bentonite, is very sticky, and prevents it from being squeezed out. That is why it is so messy, if you get it on your fingers etc.

The proper grade of molybentone is expensive and comes with a new boot kit. Actually, two grades were used, the stuff in the pot joints was not the same as in the CVs, which is no doubt because the rolling action of the balls is very different, but I think spares suppliers are generally supplying the same grease for both nowadays, which is just about ok.

If you do use standard moly grease, or even LM in dire emergency, it must be cleaned out and replaced with the correct stuff as soon as possible.

[dklawson]

That is interesting information Tiger.