Rust

Internal engine rusting is caused by a variety of factors; some are controllable, while others are not. First, engines are more prone to rust internally if the vehicle is driven in cold weather, especially for short trips, say under four miles while temperature is under 50° F. Secondly, infrequent oil changes or use of poor quality oil will promote rusting. Thirdly, inoperative pollution control devices like the exhaust gas recirculation (EGR) valve will support the development of rust. Lastly, leaded gasoline causes rust formation, among other problems, but this kind of gasoline is basically no longer available.

Cars that are not used frequently are prone to engine rust. This is because moisture in the air condenses on cylinder walls at night. The moisture attacks the unprotected cylinder walls.

Thus, to minimize the chance of internal rust formation, it is important to avoid short trips in cold weather, change the oil frequently with high quality oil, and keep pollution control devices functioning properly.

SYSTEMS
ENGINE WEAR
FRICTION
LONGEVITY TIPS