enhance

My question is, does the "Enhances "Souleater" effect" stack? reason why i ask is because there is 3 items that i know that enhance it, and if it stacks, would make it 16%, but it gives no indication of stacking effects >.< any drks out there know?

http://www.metacafe.com/watch/524517/double_your_gas_mileage/ You can almost double your gas mileage by following these steps. I think Im going to try this out