What Does Motor Oil Do? Part Four

Last but not least, outboard oil improves your fuel economy. The easier it is for your engine to run, the less fuel it needs to use. In order to maximize your fuel efficiency, be sure to change your oil when recommended and always opt for premium oil. If you don’t know which product to choose, consult your owner’s manual. Or if you’re purchasing outboard motor oil, you can use the TC-W3 Certification as your guide.

The National Marine Manufacturers Association awards TC-W3 certification annually to oils that meet a stringent set of standards. Each of the oils is tested on several engines in a variety of conditions to garner objective, quantifiable data with which to compare the oils. If you want the best for your engine, be sure to purchase oil with the certification.