Thread: engine oil

Originally Posted by Distortion

Thanks for the reply

got my questions muddled up above

Short story is I've got HPR30 in the gb and transfer of my 110 according to the mechanic

I was going to use the same in my Stage 1 LT95 and in the engine just use some 20W-60 diesel oil I have for the 1972 Perkins in the boat

I read this which suggested there was better choices so given both vehicles are the same Engine/gb/tc with salisburys

Whats the best choice for
Engine Oil:
GB:
Transfer:
Diffs:

the county has a detroit in it but I doubt this changes much

Your advice is very much appreciated


Cheers

20W60 is far too thick for an isuzu - even in summer. I tried it once - never again! RX super and other oils most people use are a 15W40.

"The best" is somewhat open to interpretation - the best if money is no object or the best ratio of price to performance?

Here is what I use, however bear in mind I have an LT85/LT230 not LT95:
Engine Oil: Castrol RX Super
GB: Castrol Syntrans (change at 20k-30k km intervals - so not too $$$)
Transfer: EP80W90
Diffs: EP80W90 front (rover W-ARB ), EP85W140 rear (salisbury w-ARB )

I am not as fussed which brand of gear oil I use, but usually castrol.

The only problem with the LT95 is most have oil migration from box to t-case. However I would use a 75W80 GL4 oil for the t-case (e.g. Castrol VMX-M). If you have a lot of oil migration you may want to use Castrol VMX80 in the box as it will be cheaper to top up (note VMX-80 is less viscous than VMX-M).

Thanks for that, just relised I should have clarified both vehicles have non trb LT95

Transfer: EP80W90 would't this eat the shims in a non-trb LT95 I assume this is LT230 only?

Originally Posted by Distortion

Thanks for that, just relised I should have clarified both vehicles have non trb LT95

Transfer: EP80W90 would't this eat the shims in a non-trb LT95 I assume this is LT230 only?

That was only for LT230. If you keep reading I suggested this for an LT95 t-case (GL4 and the right viscosity):
Castrol VMX-M Transaxle & Manual Transmission Fluid - 75W-85, 4 Litre - Supercheap Auto Australia

However I do think the GL5 thing is overrated - I used GL5 oils for years in my series box and t-case and couldn't notice any corrosion/erosion of the bronze parts when I pulled it apart.

We use detroits at work, they have a special requiremnt for low ash I think, it's a two stroke. Intersting conversion what engine did you fit 4-71? love that detroit note

sorry bit of confusion there my salisbury has a detroit locker in it motor is a 4bd1