Thetford - 64 oz. - Premium RV Wash & Wax - 96014. Our formula is a convenient wash and wax in one, cleaning while leaving a protective shine. Removes the toughest soils such as dirt, road film, dried on bugs, bird droppings and more.. Size - 64 oz.. Other benefits include:. Multi-purpose - works on RVs trucks cars & boats. Safe for gel-coat fiberglass painted aluminum. Won't harm or fade decals. Leaves a protective shine. Easy to use. Nontoxic. Nonflammable. Biodegradable. Available in 32-ounce, 44-ounce & 1-gallon recyclable bottles