Wynn’s Service Kits Professional Formula Based On 12 Services Per Week – 2.4 Oil Changes Per Day. Retail service charge @$39.95 $479.40 Less: Cost of Product @$22.37 $268.44 Profit Available @$17.58 $210.96 Plus Profit from “Free Oil Filter” @$15.00 $180.00 Total Projected Profit @$32.58 $390.60 When it’s to change your oil make sure it’s a profitable decision Huge Range of Engine oils “Free Filters” (with Wynn's kits) Sump plug washers