Cheers guys, been really helpful. I've managed to secure some washers, so I will change the oil, the filter and the sump plug on my series 1 at the weekend. It doesn't have a washer on it at the moment... Its a copper plug, so I'd imagine it never had one Thanks again Brad

Hi all... First time posting here. Does anyone know the diameter, and the thread size of the sump nut on a Rover 3.5 V8, and / or where I can purchase a replacement. I've got a copper one with a 21mm socket size in there at the moment, but its leaking about 5 drops of oil a day and I think the...