My oil filler socket is blowing a bit, and it looks like the O ring on the socket (Number 6 on the diagram below) has flattened off. Anyone know what size it is before I pay motorworks £5.95 plus £3 p&p for a standard part that costs pennies...
And for bonus points, what size is the O ring on the filler cap (8) - I'll change them both.
And for bonus points, what size is the O ring on the filler cap (8) - I'll change them both.