(NewsUSA) - Motorists who want to "go green" don't have to change vehicles to help the environment; they should change a few habits, say the experts at the National Institute for Automotive Service Excellence.

Regular vehicle maintenance and better driving habits are two easy-to-implement strategies that can put you on the road to environmentally conscious car ownership. ASE, a nonprofit organization that tests and certifies automotive technicians, offers the following tips:

* Keep the engine running at peak performance. A misfiring spark plug can reduce fuel efficiency by as much as 30 percent. Replace filters and fluids as recommended in the manual.

* Keep tires properly inflated and aligned. This reduces the engine's effort - and gasoline consumption.

* Have your vehicle's air conditioner serviced only by a technician certified to handle and recycle refrigerants. Older air conditioners contain ozone-depleting chemicals, which could be released into the atmosphere through improper service.

* Avoid speeding and sudden accelerations. Both habits guzzle gas. When waiting in the car, shut off the engine. Consolidate daily errands to eliminate unnecessary driving.

* Remove excess items from the vehicle. Less weight means better mileage. Don't forget to take down the rooftop luggage carrier after vacations.

* If you do your own repairs, properly dispose of engine fluids and batteries. Some repair facilities accept these items. Or call your local government for information.

Visit www.ase.com for more care car tips and for information about the benefits of using ASE-certified technicians for auto repairs and service.

ASE-certified technicians wear blue and white shoulder insignia and carry credentials listing their exact areas of certification. Their employers often display the ASE sign.