Howdy fine folks, first post with an easy question... Which of the 4 following fully synthetic 5W-30 oils you would use:
Mobil 1
Mobil 1 High Mileage
Mobil 1 Extended Performance
Valvoline SynPower
Application:
1997 Chevy Astro Van
4.3 V6
170,000 miles
Manual states to use 5W-30
Location...