Jos Posted September 3, 2007 Share Posted September 3, 2007 Hi, I've got a 200TDi and LT77 box in the hybrid. it's always been a bit of a pig changing from 2nd to 3rd (to be honest it doesn't love going into 3rd from 4th much either) but recently has developed a more serious problem. After prolonged periods cruising on the motorway at around (ahem ) the speed limit the box sticks in 5th; and needs a hefty whack to persuade it out (while coming down the slip road) into neutral. I can live with this, but what I can't live with is it then refusing to go into any gear other than first (careering onto roundabout in neutral... ). After any prolonged speed runs it stiffens to such an extent it is barely useable, but when left overnight to fully cool down it is fine (although not exactly smooth shifting still...). My first though is to change the oil - I called into a local garage here (Exeter) who said it needed DexxonII automatic gearbox oil (even though it's a manual) - is this right? What oil should I use? I don't mind spending a bit as the next step is probably a new box - unless anyone has any other ideas. Thanks, Jos Quote Link to comment Share on other sites More sharing options...
Henry Webster Posted September 3, 2007 Share Posted September 3, 2007 I'd try the Dextron II before you do anything more dramatic. Both my LT77s use this. H Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 3, 2007 Share Posted September 3, 2007 I'd second the oil idea - I'd ring Mr Ashcroft and see what he's got as I'm pretty sure he has some special oils for LT77 & R380. Quote Link to comment Share on other sites More sharing options...
western Posted September 3, 2007 Share Posted September 3, 2007 Some of the LR recommened fluids for the LT77/LT77S are Castrol TQF, Duckhams Q-matic, Shell Donax TF. or try the Difflock oil from their on-line shop @ difflock.com. Quote Link to comment Share on other sites More sharing options...
paintman Posted September 3, 2007 Share Posted September 3, 2007 www.ashcroft-transmissions.co.uk look in the FAQ section where they say ATF Dexron 2 or 3. In my RRC factory manual (MY1986 to 1989) it also states the LT77 box must use an ATF fluid. Don't use EP in a box that is supposed to use an ATF as it is too thick and you can/will trash the box as a result. Quote Link to comment Share on other sites More sharing options...
Paul2A Posted September 3, 2007 Share Posted September 3, 2007 This may seem a little obvious but if your changing the oil check the oil strainer for build up of carp, located at the rear of box large hex head just b4 trans box. ( on underside) Quote Link to comment Share on other sites More sharing options...
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