I'm 68 and have replaced front discs and pads, rear upper suspension arms (including stripping rust, priming, painting and rustproofing subframe and all other rear suspension parts), stripped and cleaned rear brakes (including derusting, priming and gloss painting exposed metal parts), full lube service (engine and auto box) and MOT preparation (including cleaning brake pipes and waxing- the car, not me!), this last year! It takes much longer than it used to (but doesn't everything!).
