Will a brief lack of lead substitute damage the engine of my Series III Land Rover?
I normally add some lead substitute to the tank of our 1980's Series III Land Rover. The other day I didn't (because the garage didn't have any on its shelves and I then forgot about it). So with a full tank of unleaded I went for a 60 mile drive up and down the hills of Exmoor. Do you think the absence of a substitute would have led to damage to the engine? The only real difference since the drive is that the car is tending to stall on tickover unless a bit of choke is used - though there may be a coincidental issue with the engine apparently not warming up properly. As ever I'd be very grateful for your advice.
Asked on 6 February 2012 by PK, Wimbledon

No. The stuff coats the valves and valve seats and stays there for some time. But obviously it will eventually start to disappear.
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