1990 Honda Accord Owner's Manual - Page 110
1990 Honda Accord Manual
Page 110 highlights
Salt used for road de-icing will coat the bottom of the car and hasten rusting. Localities with high humidity have greater potential for rust problems, especially where salt is also present on the road or in moist sea air. Industrial pollution will accelerate the deterioration of paint finishes and promote rusting. Preventive Service Check all drain holes in the doors and body panels for clogging and clear if necessary. When washing your car, also clean the underside of the car by using high pressure water; above subframe, inside front fender, rear suspension, inside rear wheel housing, and under rear bumper. After washing your car or after heavy rain, check for leaks. Dry any wet areas of your car's interior. Have leaks repaired as soon as possible.