my car is due a 40k mile service in sep. i was just wondering if it is worth changing the oil before then as i am not sure when it was last changed, i have owned the car 1 month.

what oil should i use and should i flush the engine with something or not?

thanks for any help

just do it at the service why put new oil in then months later do it again;)

no need to flush really the engine is still young and fresh like an 18yr old virgin lol