Synthetic Motor Oils - Car Oil change
Synthetic oil was developed for high-temperature use in jet aircraft engines decades ago when engineers realized that petroleum-based oils break down and lose their lubricating capabilities when exposed to high heat.
Petroleum-based oils generally require replacement every 3,500 to 7,500 miles, depending on service use. Synthetic oils can easily offer double the service life as their chemical composition does not break down over time. Several manufacturers have taken advantage of this and supply synthetic oil in their vehicles from the factory to extend oil-change intervals and extend engine longevity.
their use can possibly increase the life of your engine.
biggest disadvantage of synthetic oil is price.