Because people are rushed, unsure of themselves or are following poor advice, they sometimes do things that unwittingly damage their vehicles. And undoing this damage can result in a hefty repair bill. Here are 5 things you should never do to your vehicle: 1. Drive When the Oil Light Is On  When your oil light is on, it means you could be low on or out of oil, or the oil pump may be faltering. Either way, pull over immediately and check the oil level with the dipstick. If your oil levels are low, call a friend or family member to pick you up and take you to a store where you can buy more. Driving could risk blowing the