Excess Oil

I made a mistake (don't ask) and overfilled the engine oil by 1 litre.
Must I extract this or would it be ok to drive on?
Advice would be greatly appreciated.

I'd recommend you don't start the engine with that amount of overfill.

It could push out an oil seal or cause an engine runaway if it's a diesel.

Get hold of a vacuum oil extractor & suck the excess from the dipstick tube - if it has one.

Thanks -will do

a cheaper alternative would be buy the the Sringe type extractor from machine mart.