Have a 99 F150 4.6 V8 with a little over 100,000 miles. It does not leak on the pavement, but you can tell where it seeps a bit on the underside of the vehicle. It uses maybe a 1/2 quart to a quart over 3000 miles and 4 months. Always used Motorcraft/Tropartic oil. Purchased some Maxlife Blend 5W20 and was wondering if this is a good idea to put it in due to the seepage or if I should go back to the Trop Artic/Motorcraft. Original Oil was 5W30 but got back spec'd to 5W20. Always have used the Syn Blend stuff.