My motor shakes. When I stop or drive off my car starts jerking and oil is leaking from the valve gasket.
by Visitor in Atwater, CA on April 20, 2011
Sounds like two separate issues. The oil leak is something that should be addressed, but probably is not influencing the motor shaking.
Have the ignition components - down to the spark plugs - inspected for a possible misfire. There can be other reasons the car will "jerk" such as transmission issues, but based off of your description, I would look at plugs, coils, etc.