(f) Lubricate all key lock cylinders. Lubricate allhinges and latches, including those for the hood,rear compartment, glove box door, and consoledoor. More frequent lubrication may be requiredwhen exposed to a corrosive environment.Applying silicone grease on weatherstrips with aclean cloth will make them last longer, seal better,and not stick or squeak.(g) If you drive regularly under dusty conditions,the filter may require replacement more often.(h) Change automatic transmission fluid and filterif the vehicle is mainly driven under one ormore of these conditions:− In heavy city traffic where the outsidetemperature regularly reaches 90°F (32°C)or higher.− In hilly or mountainous terrain.− When doing frequent trailer towing.− Uses such as limousine service.− Uses such as high performance operation.(i) If using DOT-4 brake fluid only: Drain, flush,and refill brake hydraulic system at a regularmaintenance service (I or II) every two years. Thisservice can be complex; you should have yourdealer perform this service. See Brakes onpage 405.(j) Drain, flush, and refill cooling system. Thisservice can be complex; you should haveyour dealer perform this service. See EngineCoolant on page 389 for what to use. Inspecthoses. Clean radiator, condenser, pressure cap,and filler neck. Pressure test the coolingsystem and pressure cap.(k) A fluid loss in any vehicle system couldindicate a problem. Have the system inspectedand repaired and the fluid level checked. Add fluidif needed.(l) Inspect throttle body bore and valve plates fordeposits. Open the throttle valve and inspectall surfaces. Clean as required.(m) If you drive regularly under dusty conditions,inspect the filter at each engine oil change.511
