wrcwrc Posted November 12, 2007 Share Posted November 12, 2007 Right, help needed, as I seem to be getting no where as I have so much conflicting advice. Changing all fluids on my 200 tdi on thursday, but I want to improve on the atf dextron 2 that I have already bought for the LT77 - can anyone point me in the direction of the oil that I need to go for? Basically the best i can pick up from a motor factors etc as I am not going to have time to mail order. Now, are the likes of 75w80 - 80w90 - 75w90 all useless in the LT77???? Im guessing they are??? but arent MTF75 or MTF94 just these grades? Basically the box is so sweet on this disco, and i really wanna keep it like that - my brain is hurting from all the reading up ive been doing about this and i am still no clearer on what i can get off the shelf that will be the best. Cheers guys. Quote Link to comment Share on other sites More sharing options...
wrcwrc Posted November 12, 2007 Author Share Posted November 12, 2007 Also, is 75w80 gear oil the equivilant to MTF94 - im sure it is??? Ive heard so many stories of that MTF94 is a much better substitute than ATF...? Quote Link to comment Share on other sites More sharing options...
DiscoClax Posted November 13, 2007 Share Posted November 13, 2007 IIRC, the manual trans is specified with Dexron IID grade ATF. This means that pretty much any Dexron grade of IID or higher is suitable. I've found "Castrol Transmax Z" to be excellent (it's a Dexron III full-synthetic) - gives very good shift feel and amazing protection, but a bit pricey. This is my default manual trans oil for my cars (esp front-wheel drives that have to work pretty hard). I know a number of transmission specialists that only use Castrol Transmax Z in their rebuilds/customs/etc. as it's cheap insurance and gives very good shiftability. I'd have to recommend strongly against using gear-oils if the 'box wasn't originally designed for it. The thicker gear oils usually cause poor/notchy shifting (esp when cold) and can actually damage the synchros and bushings in some cases. People often believe that thicker is better. Not true at all. A good quality Dexron ATF will perform as good or better than a thicker gear oil in appropriate applications. Esp true of synthetic ATFs which have very high cushion abilities (EP) and will stay between the gears where a mineral gear oil would have squeezed out under load, causing high wear. Remember that auto's are just manuals with some wet-clutches and electrickery thrown in. They still need to transfer all of that torque through gearsets... If you wade or tow regularly and need to change the oil on a regular basis, just fill it with good-quality mineral ATF per the spec. If oil changes are infrequent, or you want the best, fill it with a high quality synthetic ATF. Of course, this all assumes that I've remembered it right and the original oil spec is actually ATF, otherwise just ignore the above and fill with a decent 80W90 Quote Link to comment Share on other sites More sharing options...
discojmz Posted November 13, 2007 Share Posted November 13, 2007 original spec is ATF yes, so stick with what you're supposed to put in it! remember, if it's a sweet gearbox, it's only because the stuff inside it is doing its job well. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted November 13, 2007 Share Posted November 13, 2007 Ashcroft Transmissions recommend Dextron 3 or equivalent I tend to use TQF, which is ok to use. Les. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted November 13, 2007 Share Posted November 13, 2007 I'm pretty certain MTF is not the same as EP90, if Dan & Jen's experiences are anything to go by EP90 really screws things up. Quote Link to comment Share on other sites More sharing options...
wrcwrc Posted November 13, 2007 Author Share Posted November 13, 2007 ok guys, i will stick with the dextron 2 that i have (minteral). im not massively hard on my gearbox, and regular changes shouldnt be a problem. Would you recommend putting in an additive with it just to help the dextron 2 along? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted November 13, 2007 Share Posted November 13, 2007 Would you recommend putting in an additive with it just to help the dextron 2 along? I'm normally of the opinion that the oil companies know enough about oil (and have big enough R&D budgets) to make it right without adding other stuff to the mix. Quote Link to comment Share on other sites More sharing options...
Tonk Posted November 13, 2007 Share Posted November 13, 2007 I'm normally of the opinion that the oil companies know enough about oil (and have big enough R&D budgets) to make it right without adding other stuff to the mix. ashcrofts do this stuff, i've never used it but ashcroft do know wot they're talkin about Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted November 13, 2007 Share Posted November 13, 2007 MTF 94 will improve the shift quality on any LT77/R380 box - even my wife noticed ! Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted November 13, 2007 Share Posted November 13, 2007 ashcroft do know wot they're talkin about Amen to that, they're one of very few people I'd believe if they said an additive was worth it. Quote Link to comment Share on other sites More sharing options...
DiscoClax Posted November 14, 2007 Share Posted November 14, 2007 Or you could put that £10 towards a decent synthetic oil. IMHO, that's a better investment... Quote Link to comment Share on other sites More sharing options...
wrcwrc Posted November 14, 2007 Author Share Posted November 14, 2007 http://julianreynolds.forumup.co.uk/viewto...=julianreynolds have a look at this guys - this guy cant seem to recommend synthetic engine oil enough.... what do u reckon? might give it a go... Quote Link to comment Share on other sites More sharing options...
First_Fleet Posted November 14, 2007 Share Posted November 14, 2007 Redline MT96 for me in an R380. Quote Link to comment Share on other sites More sharing options...
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