To be honest, not often Ron. Maybe once a week ha ha.
But in my lazy defence, my previous cars didn't have diff oil in the normal manual as far as I know, well the last one definitely didn't even have gearbox oil. Yeh engine oil, power steering etc but not the diff oil. Hmm might pay more attention to it in future. And now I remember I have Rave on my laptop I'll ask less known questions...

