gear box oil

[thomson]

Last year towing a 1.5 ton caravan ,mainly off road , my transfer gear thrust washes let go .The Land Rover expert of many years in Rockhampton , said it is a week point of the transmission and I should run synthetic 20 /40 oil

[Homestar]

Assuming we're talking the LT95 4 speed manual box here? It should run engine oil - I use whatever I put in the engine, in the box - just easier that way for me. Were you running gear oil? That's a no no in these boxes. Not sure if the thrust washers are a weak point - Bearman would be able to answer that if he sees this thread being the guru on these boxes. :)

I see no issue with running a 20w/40 synthetic oil.

[Bearman]

Or you could upgrade the intermediate shaft to a tapered roller bearing one like in the military LT95's

[thomson]

I was running the same oil I run in the motor .

[Red90]

I was running the same oil I run in the motor .

And what was that?

[Blknight.aus]

15/40 as per the manual.

I've pulled down boxes that were on their second clutch and +500K Km that only needed refreshing which ran purely on engine oil.

[thomson]

And what was that?

15/ 40 penrite

[Red90]

15/ 40 penrite

The oil is not the issue. Make sure there is no pressure being put on the shift lever.

[mark2]

Last year towing a 1.5 ton caravan ,mainly off road , my transfer gear thrust washes let go .The Land Rover expert of many years in Rockhampton , said it is a week point of the transmission and I should run synthetic 20 /40 oil

Given the sub forum, I assume we're talking about a Perentie? If so, seems its been retrofitted with a civvy/non TRB transfer? And yes, the non TRB intermediate shafts can be a weak point, particularly when towing.

[thomson]

169415Yes unknown to me the box must have been changed the new trust washers had more groves for oil than the failed ones . so hope this does not happen again .