With the Val 20W50, it's not just the brand, but the weight. The clunker truck which we used to this weight in left us a year ago. Nothing I have now should use a 20W50. 15W40 MAX.
The synthetics-leaking issue was a problem with early PAO synthetics like Mobil 1. Newer ester-fortified formulas have largely eliminated this.
--- Bror Jace
The synthetics-leaking issue was a problem with early PAO synthetics like Mobil 1. Newer ester-fortified formulas have largely eliminated this.
--- Bror Jace