Both.
But mainly cleaner/protection i have waxoyled under there and i want to try and protect the underside of the car.
From experience VW sumps don't have a great life expectancy if not fully covered, i have one to replace on a family members 54 plate SEAT for example.
DOC:
Thanks, but don't rush, im in no rush for an answe,r just anytime you have 5mins and some light to have a look is fine mate.