unfortunately toe only way to top up/re-fill the auto-trasmission on a disco 300tdi is through the dipstick tube, can be a long drawn out process as you have to wait for the fluid to go down before continueing filling.
It is important to know the types of fluids that go into different cars. A Land Rover Discovery takes Dexron III automatic transmission fluid.
where do I put trasmission fluid in landrover discovery 2
Dextron III ATF
If a 1993 Land Rover Discovery is stuck in a low ratio gear, check the transmission fluid levels. If the fluid levels check out okay, the transmission may be experiencing a jammed gear.
ATF Dexron IID or Dexron III
there isnt one. theres a plug on the side of the trannsmission.
The automatic and manual gearboxes in series 1 and 2 Discovery both use dextron 3. Discovery TD5 uses MTF94 fluid and can only get it from Land Rover dealers or specialists. I believe there is not a compatible alternative.
On non dipstick type transmission you cannot check the fluid level directly, but there is a bolt front of the transmission sump, unscrew and you can refill to that level.
According to everyone I have talked to (many mechanics), Land Rover has it's own transmission fluid that it requires for its vehicles. And, it is only sold at the dealership. I was told by my Napa Auto parts guy that Amsoil produces a synthetic transmission fluid that will work.
on a 200tdi and 300tdi there is a little square pot at the back left hand side of the engine bay. The pot is see through. on the side of it there are 2 lines, a minimum and a maximum line. Using DOT 4 brake fluid to top up but do not exceed the maximum line.
The level of the fluid is critical. get it done by somebody who is familiar with automatics.
dexron 3 or 4