So due to some unforeseen events, driver swapping, road trips, etc... the car I drive has gone 20K miles without an oil change. I know it was last given Valvoline synthetic. It just hit the 40k mile mark (2010 Mazda 3 that was bought new). '
I am going to get an oil change today.
BUT, is there anything else I need to do to my engine to restore it to good health other than an oil change?