Ignoring simple preventative maintenance, like changing oil and filters or failing to make minor car repairs today, could mean thousands of dollars in auto repair bills tomorrow. There are some simple, but important, repairs and maintenance tasks car owners can do on their own – or have a mechanic perform at an affordable price – before these minor fixes become major repairs. For instance, neglecting to change the oil and filter periodically will increase contaminants and shorten the engine life. In the worst case scenario, it could mean an engine replacement. The do-it-yourself cost for an oil and filter change is approximately $25 on a 2005 Toyota Camry, and at the shop, costs approximately $65. An engine replacement on that same car would cost more than $4,000!