Ford Focus RS Forum banner

volatility

  1. Motorcraft 5W-50 vs other motor oils NOACK volatility rating, and should I care?

    Focus RS Maintenance
    It's that time, time for an oil change. For the longevity of engine power and health, it seems that using an oil that has lower NOACK volatility will reduce the oil vapors going back through the intake and baking on to the intake ports. I kinda remember seeing a comparison of the NOACK...
Top