Engine degreaser? I've found that a big tin of the Hycote stuff works really well when applied with a paintbrush. That's on an engine that's not fitted though.
Or leave the plugs in and replace when its all dry. You can buy engine mothballing kits that have nylon bungs which thread into the plug holes.Mr.Whippy said:. If you've got a compressor, give all the spark plug holes & plugs a good blast of air before you fit the leads.
Make or buy a cheap funnel, small bottle cut at the endBe more careful when topping up the oil in future.![]()