4 1/2 or 5 quarts of oil with 1/2 quart of ZZDP?

furrystump said
I run VR1, $35 for 5 quarts? prior to that Brad Penn grade 1. Made the change because Brad Penn was sold and questions of quality came up. Also they carry VR1 at my Advance Auto store in town. Solid flat tappet

VR-1 is a good choice. I can't get the 10W-30 for less than $10/qt in my area. If you can find the 5 qt container, it'll be a lot less than that.