I ALWAYS use Valvoline 10w40 and a Napa Gold filter. This filter is made by WIX. WIX is the best filter available. More filter media and none of the "cardboard" that is in the fram/motorcraft/supertech....and other less expensive brands.... Yeah sure you can get them for $2-3 at walmart, but you get what you pay for. Napa Gold is approx. $5-7 and WELL WORTH IT!