Spaces of .001” can separate parts. Oil keeps them apart!
Motor oil is an essential lubricant. It’s main function is to lubricate the moving parts in your engine, but it also cleans inhibits corrosion and cools the engine. For years the accepted interval for oil replacement and filter service has been every three months or every 3000 miles. Improvements in oil chemistry and engine design technology have allowed for a longer oil change intervals typically anywhere from 4,000 to 10,000 miles or more for most vehicles.