local-expert-johns-automotive

Improve Your Mileage
Improve Your Mileage
Improve Your Mileage
Lowering a truck’s tailgate improves mileage Drivers of pickup trucks have long assumed that lowering the tailgate is better for aerodynamics and therefore improves gas mileage. But according to Diane Bloch, an aerodynamic-performance engineer for General Motors, driving with the tailgate up is actually more aerodynamically efficient...