238 MAINTENANCE AND LUBRICATION
CAUTION Proper care of the paint finish is an important part of the durability. Chemicals used to wash the paint should be of neutral pH with a range of between 6 and 8. Detergents containing butyl cellosolve or potassium hydroxide should not be used. Note: Vehicles should be washed only in special wash bays to protect the environment from cleaning agent contamination.
DANGER Vehicle cleaning products must be handled carefully, as these products may be poisonous. Keep all cleaning products out of the reach of children.
WARNING Do not clean the underside of the fenders, cab, chassis, etc., without protecting the hands and arms, as injuries may result when scraping against sharp edges.
CAUTION For chassis used in concrete operations, do not use muriatic acid or similar types of products to clean concrete from the cab or frame surfaces. Use of these types of products will damage the paint finish and void the vehicle warranty. Mack Trucks, Inc. has approved EL-ReadyMix Truck Wash & Wax for removing concrete from the vehicle surfaces. This product is available on a direct ship basis from EMS®. For additional information, contact EMS® at 800-510-8812, or on their web site at www.enviromfg.com. Note: Unprotected aluminum surfaces will form an oxide layer if not maintained. This is especially important during cold season when roads are salted or in coastal areas where the salt level in the air is high. Clean with steam or high pressure water. Use a mild detergent if the dirt is heavy. Rinse well. Clean aluminum surfaces with warm water. If the surface has heavy dirt or tar spots, use a tar remover. To prevent spotting, wipe aluminum surfaces dry after washing. The use of an aluminum
