Why Change Your Oil Filter? Even though most engines hold only 4 to 5 quarts of oil, constant re-circulation of that oil means that approximately 15,750 gallons will pass through your car's oil filter in 3,000 miles. This is why it is so important to have a clean oil filterñ regular oil and filter changes extend the life of your engine. Oil helps to equalize temperatures in your engine by traveling from hot areas to cooler areas. Gradually, engine heat evaporates lighter components of the oil, causing it to oxidize and thicken. In addition, oil picks up contamination: soot from the piston rings, metal filings, dirt and grit that get past the air filter and other contaminants from normal operation of your engine. Fortunately, your oil filter acts as a second-line defense for fighting these contaminants. It prevents dirt and other contaminants from damaging internal engine parts by constantly cleaning the oil as it flows through your engine. An oil filter is a low cost way to keep your engine healthy. Since 80 percent of motorists drive under severe conditions, Jiffy Lube recommends replacing your filter every three months or 3,000 miles. Consult your owner's manual for more information. Why do I need to change my vehicle's motor oil? Why are there different weights of motor oil? How often should I change my vehicle's motor oil? How do I know if I am a "severe" driver? Why do I need to lubricate my vehicle's chassis? Why do I need to inspect my vehicle's vital fluids? Why do I need to change my vehicle's differential fluid? Why is it necessary to periodically replace my vehicle's air filter? Why is it necessary to periodically replace my vehicle's PCV valves and breather elements? Why do I need to inspect my vehicle's headlights? What is Jiffy Lube's Free Refill Policy? Does Jiffy Lube's service protect a new car' s warranty?