[thstone]

Depends on the duration and slope. If its minor, nothing to worry about.

If both were severe, the downhill side will carry most of the load and the tires or steering rack might be affected. Tires might flatspot from the long duration and extra loading. Steering rack could be under stress if you turn the front wheels right or left when parking facing up/down hill. Shouldn't be a problem for the chassis or oil.