With the price of gas going up, down and all over the place, people are becoming more and more concerned about fuel economy, and Gearz is asked time and time again what products we recommend that really give you better economy and performance. Well, ask no more…because Stacey not only addresses that question but also goes through the top 6 upgrades that anyone can do to a vehicle! After that, Stacey takes on the subject of alternative fuels by demonstrating that you can actually make a diesel engine run and run well, on old used cooking oil! Now there is yet another reason to eat French fries! So pass the ketchup and put the hammer down!