VOLUNTARY EMISSIONS SERVICE CAMPAIGN (SC169_Rev1): ENGINE OIL FILLER CAP INSPECTION AND/OR REPLACEMENT - This bulletin has been revised to include additional information.This bulletin provides the procedure to inspect and, if necessary, replace the oil filler cap on some vehicle models listed below. The engine oil filler cap may contain a misprint of SAE Engine Oil Viscosity Number. Follow the procedure outlined in this bulletin to replace the oil filler cap.