Thread: Disco 1 gearbox

JL321,

A big part of any gearbox job is going to be man-hours to get the gearbox out to work on it and then put it back afterwards. Last time I had something done on my box it was about $3k and that was a few years ago.

Before you go tearing down your gearbox you should know the following. LR used to recommend automatic transmission fluid to be used in the R380 gearbox, works fine for many but there is better stuff around in the line of Manual Transmission Fluid (MTF). Most go for a MTF, there is plenty of choice to accommodate different temperature ranges and special wizz bang additives. A change in the gearbox lubricant has made many boxes synchros work better and hold off the synchro replacement for a time when other things need to be done.

Search for Redline, Motul or posts on this forum by Rick130 who is a knowledgeable pers in matters relating to lubricants.

So a possible gearbox oil change could sooth the problem?

I have taken it for a test drive, and couldnt select 2nd on the down change from 3rd. But when going from 1st to 2nd it's no problem

when in neutral coming out of third on the way down give the engine a blip on the throttle to get the revs up and it will drop into second a lot easier.

Ok so next time I'm with the disco, I'll try that. Do you possibly think it isn't the synchro thats damaged?