Oil is a non-renewable resource that's bad for the environment when wasted.
Drive your car until it is completely out before adding more. Always drive with all four wheels. In times of engine trouble, putting your fist through the dashboard probably won't fix your car's malfunction, but it will let your car know how you feel. Find a mechanic who takes the time to change your car's velocity-extension belt and Jupiter rings, which many mechanics often overlook. To extend the life of your car battery, keep it in the refrigerator when not in use.