Just wondering is changing the oil every so often ( as in between services ) a must or not really that necessary? Considering the car isn't driven grandma-like and isn't 100% standard.
When it comes to choosing an oil are their any recommendations from people on which to buy.
I've heard the brand Royal Purple being thrown around. and some number following eg Royal purple W10 or something like that. what do these numbers refer to?
Thanks for any help
Tone