Keep your car, truck, van or SUV oil clean and healthy by following your manufacturer maintenance recommendations. Check your oil levels with the dipstick, if applicable, every time you fill up your gas tank. Some of the things you may want to pay attention to is bubbles or foam, a gasoline smell or milky appearance. Color, smell and consistency are all good signs of engine issues or contamination or if the oil level is too high. Any questionable consistency or color should be brought to Oxmoor Ford Lincoln service advisors attention when you bring your new or used car in.