Skip to content

Oil change

An oil change is the simplest job on an engine and the one where most can go wrong — not in the workmanship but in the choice of oil. Every manufacturer specifies an approval, and it is not a suggestion: an oil with too much ash will clog a diesel particulate filter, one that is too thin will not hold a film under load.

What it covers

  • Oil to the manufacturer's approval, not merely the right viscosity
  • Oil filter and a new sealing ring on the drain plug
  • Draining with the engine warm so the sludge comes out with it
  • Resetting the service indicator and recording it in the service book

When it is due

  • The manufacturer's interval by mileage or time has been reached
  • Lots of short trips, towing or city traffic — then rather sooner
  • Oil on the dipstick is thin or smells of fuel

Worth knowing

Ask to see the approval, not just the viscosity. "5W-30" only says how thick the oil is when cold and when hot — which additives it carries, and whether it suits your engine's exhaust system, is in the approval printed alongside. A workshop that can name both has the right oil on the shelf.

Find a workshop

Other services