There are a few things you can do to remove excess oil from a car. The first is to clean the area where the oil was spilled. This can be done by using a mild soap and water solution, or by using a vacuum cleaner and bucket. The second is to change the oil in the car. This can be done by using an engine oil filter, or by using an automatic transmission fluid filter. The third is to use a vacuum cleaner and bucket to clean all of the parts of the car that may have been affected by the spill.