Sorted the parking light problem - engine dry steam yesterday then wash & vac; one of the power steering hoses from the ATF resevoir is leaking but don't know which, hence the cleaning, then will get the pipes done tomorrow. Oil change helped with the heavy starts in this cold snap (less than 20C!) but reckon it's the power steering pump making the buzzing/ rumble... bought some Turtle light cover polish cos it came with a free scratch repair pen...