1998 Chevrolet Venture Owner's Manual - Page 431
1998 Chevrolet Venture Manual
Page 431 highlights
I LongTripmfghwayMaintenance 100,000 Miles (166 000 km) 0 Inspect spark plug wires. Schedule I DATE MILEAGE I An Emission Control Service. 0 Replace spark plugs. An Emission ControlService. 0 Change automatic transaxlefluid and filter if the vehicle ismainly driven under one or moreof 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 found in taxi, police or delivery service. I f you do not useyour vehicle under anyo f these conditions, the fluid and filter do not require changing. 150,000 Miles (240 000 km) 0 Drain, flush and refill cooling system (or every60 months since last service, whichever occurs first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. I DATE I ACTUAL MILEAGE I SERVICEDBY I I 7-28