The oil change hasn't gone very smoothly. In fact, it brought on a bit of panic. I tipped a bottle of engine flush in with the old oil about an hour ago before starting the oil change. The engine must be run at tickover for 5 minutes, not revved, then switch of and change the oil.
I ran it for 5 minutes, switched off, then went to undo the sump plug (13mm) and the fickin thing is rounded and wouldn't undo.

My fault of course, I knew it was heading that way and meant to change it, but forgot.

I was close to having to decide whether to test the legendary quality of the engine by driving it home with the flushing agent still in the sump, or ring the boss at home, fess up, and ask to borrow a company car.

Tried tapping an imperial socket on to it, but no joy. In the end I managed to hammer a 12mm ring spanner on and got it undone.
Then realised that although the new 5L of GM 10/40 was fine, the half full one that I already had in the boot of the car, is actually half full of old coolant, not oil.

I think it will be ok to drive it home with 5L of oil in the sump rather than 6.5L.

This is why its not really advisable to do car jobs at work. 12 hour dayshifts do get very boring though.
