1993 Pontiac Sunbird Owner's Manual - Page 186

I Underbody Maintenance Chemical PaintSpotting Calcium chlorideand other salts, ice Chemicals used for ice and snow Some weather and atmospheric melting agents, road oil tar, tree and removal and dust control can collect on conditions can create a chemicalfallout. sap, bird droppings, chemicals from the underbody. If these are not Airborne pollutants can fall upon and industrial chimneys, other foreign and removed, acceleratedcorrosion (rust) attack painted surfaces on your vehicle. matter can damage your vehicle's finish can occur on the underbody parts such This damage can take two forms: if they remainon painted surfaces. Use as fuel lines, frame, floorpan, and blotchy, ringlet-shapeddiscolorations, cleaners that are marked safe for exhaust system eventhough they have and small irregulardark spotsetched painted surfacesto remove foreign corrosion protection. into the paint surface. matter. At least every spring, flush these Although no defect in thepaint job materials fromthe underbody with causes this, Pontiac will repair, at no plain water. Clean any areas where mud charge to the owner, the surfaces of 4 Finish Damage and other debris can collect. Dirt new vehicles damaged this fallout by Any stone chips, fractures deep or packed in closed areas of the frame condition within 12 months or 12,000 scratches inthe finish shouldbe should be loosened before being flushed. miles (20 000 km)of purchase, repaired right away. Bare metal will Your dealeror an underbody vehicle whichever comesfirst. corrode quicklyand may develop into a washing systemcan do this for you. major repair expense. Minor chipsand scratches can be repaired withtouch-up materials available from your dealer or other service outlets. Larger areas finish of damage can be corrected your in dealer's body and paint shop. I Foreign Material