Hot Shot’s Secret, the first performance additive and oil manufacturer to introduce a complete line of products specifically formulated for RV use, now offers four new products. In addition to the gasoline and diesel fuel additives, engine oil additive, transmission additive and slide-out lubricant already on the market, the product line now includes two new 150,000 mile, maintenance-free Engine Antifreeze/Coolants, in addition to two full synthetic Group III RV Generator Engine Oils; one for gasoline-powered engines (10W-30) and one for diesel-powered engines (15W-40)
https://www.hotshotsecret.com/product-category/rv/