When it comes to choosing between gas and diesel, it ultimately depends on what type of vehicle you have and what type of driving you do. Gas is the traditional option and is well-suited for lighter vehicles and shorter trips. Diesel, on the other hand, is well-suited for heavier vehicles and for longer trips. 

Gasoline engines are lighter and simpler in design, making them easy to maintain. They also generally run on unleaded fuel, which is more widely available and slightly cheaper than diesel. Additionally, gasoline engines typically last about as long as diesel engines, though they may require more frequent oil changes.

Diesel engines, on the other hand, are heavier and more complex in design, making them slightly more expensive to maintain. However, diesel engines are also more fuel-efficient and can travel longer distances on a single tank, making them better suited for longer trips. Additionally, diesel engines tend to last longer than gasoline engines, sometimes lasting up to twice as long. 

Ultimately, it is up to you to decide which fuel is best for your car and your driving habits. For short trips, gasoline is generally the cheaper and more convenient option. For longer trips, diesel may be the better choice due to its better fuel economy.