New Post: Should You Warm Up Your Engine Before Driving? - Warming up your engine is an age-old practice among daily commuters. Supposedly, letting the engine idle for a minute or two prolongs its life. Is there really any truth behind this though? Our maintenance crew has been asked this question numerous times. Based on our expertise, they answer that engine warming is NOT a good idea.
Why Warming Up Your Engine Is Unnecessary
Constantly letting a cold engine idle can actually be counterproductive because it gradually strips oil away from the engine’s pistons and cylinders.
This is what occurs inside an internal combustion engine as it idles: when started, the pistons compress air and vaporized fuel inside the cylinder. The spark plug ignites this mixture is ignited, creating a miniature explosion that supplies power to the drive train.
Here’s the problem: when the engine is cold, the gas may not evaporate completely as it combines with the air. For more recent cars with an electronic fuel injection, there are sensors that detect this and compensate by adding more gas to the mixture.
When there is excess fuel in the chamber, some of it condenses onto the cylinder walls and strips away the lubricating oil. When the lubricating oil is gone, components like the cylinder liners and piston rings will wear prematurely. On top of that, extra fuel is also used, which means more trips to the gas station.
What You Should Actually Do
Warming up your car isn’t ne
