Driving in Volcanic Ash Conditions
When Mount St. Helens vented its fury into the Northwest skies in 1980, automotive experts could only speculate on the number and severity of the problems caused by falling ash. Today, as the volcano again threatens eruptions and emissions of ash, we have a more accurate understanding of the effects of volcanic ash fallout on vehicles.
"Volcanic ash is composed of silica, aluminum and magnesium, the ingredients used to make common sandpaper. This abrasive material can damage the internal workings and could significantly reduce the life of an automobile's engine," said John Milbrath, Vice President of Automotive Services for AAA Washington/Inland.
Following are tips for motorists traveling in areas of volcanic ash fall:
- If it is not necessary to drive your vehicle in areas where volcanic ash is or has recently fallen, don't do it.
- The standard air filter on a car is designed to trap most dust particles, but not necessarily particles as fine as volcanic ash. Some of these particulates may get through a regular filter. Any after-market filter that utilizes an oily coating or treatment will work best to assure the health of your engine.
- If you drive through a significant amount of volcanic ash, it is critical that your vehicle is serviced. All fluids should be changed, including engine, transmission and differential oils, brake fluid and engine coolants. Consider a second-round of service before the next regularly scheduled change interval.
- If your vehicle is equipped with a cabin air filter, it also should be serviced.
- Since the fine particles of ash can work their way into many parts of your vehicles, AAA recommends a regular inspection of wheel and axle bearings, electrical parts such as starters and alternators, and suspension bushings and steering joints.
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