going by winabbey's post above - it has more "lubricity additive" in it... whatever that is - one would assume its a soluble oil of some description

_________________
did I tell you that I won a trophy?

It answers my question on squeaking suspension. Here I was thinking it was dry ball joints (arthritis )

Much appreciated.

_________________
1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

Mine still squeaked (the S, not my joints- they weren't old enough at the time) even though it seems it had the "improved" heavy duty fluid. One has to wonder how bad the squeaking was before the "improved" fluid. So does this mean that all later S cars were filled with heavy duty competition type fluid?

RonR

_________________
68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

RonR - PM sent

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43

lack of grease and dry knuckles are often the cause - check it because you may have an actual problem that needs to be addressed before you have a catastrophic failure

_________________
did I tell you that I won a trophy?

OK, thanks, will jump right onto it.

_________________
1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

I had a mate tell me from memory (who used to work for a Leyland dealer) who got a formula off one of the BMC chemists for the original fluid.

That the first hydro systems used a red fluid but the cars squeeked. So they changed it to the other stuff (the funny smelling stuff)

I will have to ask him about alternative fluid for rally or racing

_________________