Just picked up a 1988 Notchback full of Maximim Motorsports road race goodies and a built motor Combo is a Ford Performance Boss block stroked to 327ci, Vortech V3 supercharger, GT40 tubular Intake, Trickflow aluminum heads, and a mild hydraulic roller cam that passed California smog some years ago. 12k miles on the build. PO has been running VR1 20w50. I’d like to go full synthetic and hopefully be able to purchase at my local Walmart. What do y’all think of switching to M1 15w50, M1 0w40 Euro, or maybe Rotella 5w40??
Last edited: