You can get a free oil change by using coupons. Many auto repair shops and motor oil companies offer free oil change coupons when you use their services.
Auto repair shops often offer free oil change coupons limited to the particular shop. When getting your car repaired, make sure the shop offers free oil change coupons.
Alternatively, you can get a free oil change coupon from motor oil companies. Many oil businesses have partnerships with motor oil companies and offer free coupons to customers as a form of advertisement. In this case, the coupons only apply to certain brands of oil.