Your worst nightmare is an oil leak on your brand-new block-paved driveway. The first order of business is to take immediate action and soak up as much of the spill as possible. Absorb the excess with a towel, cat litter, talcum powder, or cornflour before using regular detergent and a stiff brush. If the oil is pure, it will be absorbed by the ground. Oil with contaminants is a bigger problem. You can use degreasing chemicals or engine cleaning supplies, but you should always perform a spot test first.