Gearbox Oil Change
From WikiLEC
The problem here is not removing oil but putting it in.
The first job is to remove the Speedometer Cable and speedometer gear from the gearbox and remove the speedometer gear to check the oil level.
If you need to add or refill oil you’ll need a funnel and suitable length of hose (nobody said this was easy). The original Mobil oil specified by Lotus is no longer produced. Lotus now recommends Castrol TAF-X 75W/90, which is readily available and recommended for the S2 Elan which uses the same gearbox as the S1.
Draining the gearbox is simply a case of removing the transmission drain plug from beneath the car.
The mysterious refill plug
Some may have one. Some may not. Read on!
