Evinrude/Johnson Genuine Parts is now offering a complete line of top-quality outboard oil. The line includes Evinrude Ficht Ram Injection Oil with CarbX combustion cleaner, an additive that holds carbon in suspension and prevents it from sticking to the pistons and combustion chamber. Also available is Johnson and Evinrude XD25 Outboard Oil, which contains extra detergent to keep the combustion chamber clean. For the environmentally conscious, Evinrude's Biodegradable Outboard Oil is a synthetic formula for two-cycle engines that does not smoke, does not smell and is 6 times more biodegradable than mineral-based lubricants. Lastly, there is Ultra 4-Stroke Oil, a synthetic blend that according to the manufacturer can extend the time between oil changes from 50 to 100 hours, leading to considerable savings. Bombardier Recreational Products, Sturdevant, WI; 866-EVINRUDE; www.recreation.bombardier.com.