I can remember when I first started on the railway at 18.
Half a mile up the track and the foreman says to me get us some oil for the rail saw, walks down to the van, opens the back doors, it's taking me forever to rummage through the gear, bingo, there it is.
Walks back up the track, here you go boss, he takes one look and starts pissing himself. I'd only gone and fetched the van engine oil.
Never used petrol tools before, how was I supposed to know. ?