The Eco-Friendly Rinseless Car Wash Soap. Just mix a simple 1 oz with 2 gallons of water, and you're ready to go! Optimum No Rinse Wash & Shine - 1 Gallon. Why Choose Optimum No Rinse Wash & Shine?. Only requires 1 oz per 2 gallons of water - enough to wash your entire car!
