Lubrication Facts & Knowledge

Modern engines can burn a small amount of oil during normal operation without any defect. Car manufacturers often consider oil consumption of up to one quart per 1,000 miles acceptable, especially in high-performance engines. This happens...

Synthetic oils outperform conventional oils partly because their molecules are remarkably uniform in size and shape. In mineral oil refined from crude petroleum, molecules vary wildly, creating unpredictable behavior at temperature extremes. Synthetic oils are...

Most engine wear happens during cold starts when oil is thick and hasn't circulated yet. In the first 30 seconds after starting, metal parts can briefly touch before full oil pressure...

Large observatory telescopes require special low-temperature lubricants because they often operate in cold mountain locations or even at freezing temperatures. Regular oils would become too thick and affect the telescope's ability to smoothly...

Manufacturing lipstick requires special lubricants to help the waxy mixture release smoothly from metal molds. These release agents must be cosmetic-grade and leave no taste or odor on the final...

Engine oil doesn't just get dirty over time—its protective additives actually get used up through chemical reactions. Detergent additives sacrifice themselves by neutralizing acidic combustion byproducts, while anti-wear additives bond to metal surfaces and gradually wear away with...

Trains apply special grease to wheel flanges to prevent the loud squealing sound when rounding curves. Without this lubrication, the metal-on-metal contact between the wheel edge and rail can create noise exceeding 100...

Molybdenum disulfide is a solid lubricant that works where oils fail, even in the vacuum of space. Its layered molecular structure allows sheets to slide over each other like a deck of cards, providing...

In cold climates, motor oil can become too thick to flow properly, which is why oils are rated with a "W" number like 5W-30. The "W" stands for winter, and the number indicates the coldest temperature at which the oil will...

When mechanics mount tires onto wheel rims, they use special water-based lubricants to help the tire bead slide over the rim edge. Without this slippery soap, the rubber would stick and resist installation, making it nearly impossible to seat the...