Will this be ok?...
http://www.opieoils.co.uk/p-832-silk...-gear-oil.aspx

Or will I be better off with this one?....
http://www.opieoils.co.uk/p-850-silk...-gear-oil.aspx

They are both 75w so should both get round the same from cold, I think it's just that the first one is a full Ester based oil and the second one isnt.

For my IB5 box, currently putting 230ftlb throught it but will be increasing to nearer 280ftlb fairly soon

Cheers!

 

what car is it and i can tell you exactly what you should use tomorrow
car
age
engine size
and ill look up the oil specs for ya

 

i was told 75w -90 semi synthetic for mine. its an escort ib5, front starter brand new crate at the time. i was told i could put thicker stuff in but it would be "sticky" when cold.

 

Cheers but thats all irrelevant when your running way above normal power/torque.
For example Ford recommends 10w/40 semi for my engine, but at 27psi of boost the turbo would turn that oil water! lol
Surely a fully synth ester based oil is going to protect better than a semi of the same viscosity though?

 

not being funny but regardless of what oil you put in it at that power level it aint going to last long lol!

 

no idea mate sorry. the guy who built my 'box knew my car and engine, about 170hp and this is the oil he recommended. its been sound for 16 months now, not so much of a whine from her yet.

 

This is true! lol
Always nice to give it the best chance possible though.
No worries!

 

engine oil wise running that high i would run a 10w60 like edge or titan pro 10w60 etc used to be called silkolene

 

gearbox oil fully syn total tran syn 75w/90