If your engine idles rough after an oil change, check for loose connectors, proper filter seal

https://wiki-aero.win/index.php/Synthetic_vs_Conventional:_Choosing_the_Right_Oil_Change_in_Greensboro

If your engine idles rough after an oil change, check for loose connectors, proper filter seal, and correct oil level; small errors can cause big symptoms that are easy to correct quickly.