There's more than one reason why OptiMax is a world best seller. <br>We can talk about leading edge fuel economy, durability, unbeatable performance, the only industry 3 year factory Corrosion Warranty or Mercury Marine's leading 3+2=5 YEAR engine Warranty, or our extensive network of Specialist Marine Dealers. </br> <br>But when all's said and done The Truth Is The Proof.</br> <br>Take a look at the facts. Better still, for the ultimate proof, take an OptiMax out on the water. Head to head against even our nearest competitor, you'll quickly discover why OptiMax is all the proof you need.</br> <br>We don't exaggerate the truth on OptiMax. We don't have to. We've run our engines against the rest and the difference is Black and White.</br>