I’m not giving advice, but I’ll give you two examples.
I own two trucks and both have over 350,00 miles.
A 2000 F250 Super Duty with a 7.3 Powerstroke. Valvoline Boue Synthetic 5w40. Oil change roughly $200
A 2011 Chevy Avalanche. Synthetic 5w30 LS Gasoline Engine. Oil change roughly $100...