Do I need EP80 or EP90 or something else
There is an article by Roger Parker in this months MG Enthusiast about refilling the Rover PG1 gearbox.
The reccomended oil is Texaco MTF94 which is a fully synthetic oil and can be obtained from Sussex Classic Car Parts for £10.73 per litre plus delivery. the alternative is Castrol Syntrans 75W/90 fully synthetic oil which costs £13.00 a litre in Halfords. You will need 3 litres, I did a full drain on mine (left it a week to fully drain out) and used 2.3 litres to fill up to the correct level. You should also replace the drain plug washer (£0.72 each)
Opie Oils are much cheaper than Halfords and dont charge delivery they could seriously affect the gearbox!!!
To anyone else reading this ~ Please do not use anything else other than MTF94 or Castrol Syntrans as