Jackaroo diff additive

The front diff is an open type so you don't need the additive there.

If you look at www.mobil.com.au, their lubricant recommendations state that you need to add additive p/n 10523580 . I'd ask at a local Repco store if their's an alternative, or whether they stock the additive.

I don't think Nulon G70 is a suitable replacement. Somehow I feel that teflon coating the LSD clutches could end up destroying the LSD, despite their claim that it's safe in LSDs.

What's this all about.. I to have a 2000 jack and have never been told anything about adding any additive to the diffs. What are the symptoms if I don't, and what are the consequents. At the moment my Jack is running perfectly.

I took my advice from Castrol - they have a product that can be used straight from the bottle that satisfies the stated Isuzu requirement.....can't remember the ID right now. Castrol are very helpful - you can email them with a query and the techo will phone you back !
www.castrol.com.au

Going off Dingley's tip, I looked at the Castrol website. They list Castrol LSX 85W/140 as being recommended for Isuzu diffs.

I think the viscosity rating gives a hint as to what the additive might be doing. The 140 suggests a much more viscous fluid at high temperatures than the more common diff oils.

If its under warranty play their game with the additive, until warranty is out.

the last thing you want is warranty problems cause you saved $1.20 at Supercheap....

It is the friction modifier they used to put in engine oil, PENRITE sell it as diff addative.
The NULON is good but not the same. It stops the diff from chattering in the clutches when going around corners. It makes the LSD less efective in the bush as it lessens the friction from one side to the other

jol

Me too...had a look in my Jack record book....I use Castrol LSX 85W/140 in the rear - no problems so far. The diff would only have had the additive for awhile (from the factory) - I started servicing the vehicle mid warranty (so disgusted was I with the deception and near-on fraud encountered at the the dealership). Re the Savvas comment - I had feedback from Castrol at one stage - spoke to Sylvana - seemed to know her stuff - she knew tech aspects of the Jack etc. Message was use the LSX 85W/140 WITHOUT additive - the inconsistency is such a disappopintment eh ? But what do we do ? Castrol still shine, compared to the complete crud that some businesses dish up. For the record, I'm on Dynamax in the donk - will see how the starting goes in winter, but I'm not expecting any problems.

Hi folks.
Got the info I needed through Penrite, their rep called me back with the info I needed after I sent them an email. his (Bruce's) advise was as follows. Additive (LimSlip) required if using their mineral limited slip diff oil in Jackaroo 98 onwards, additive price was $12.60 & treats 2 ltrs "sure beats $40 from Holden. The local Auto pro shop didn't have any on the shelf, the bloke at the shop called up the rep & he had the stuff for me the folloeing day "nice to see good service for a change" .

Rep informed me if I use their synthetic next time, an additive wouldn't be required, it's about $62 dollars fo 2.5 ltrs Unfortuately they didn't have this at Super Cheap Auto when i had been looking for it , so i finished up with the mineral oil in my diff before I became aware of the need for this additive.
Castrol were very good too, they replied to my inquiry but told me to use sysnthetic + the holden oil additive. Sounds bloody expensive!! if their is synthetics are so good, why would they add a mineral based additive?( Just a thought )