F 350 2WD Super Duty V10-6.8L VIN S (1999)
Thermostat: Service and Repair
Removal
CAUTION: Do not mix Standard (green) Coolant with Extended Life Coolant (orange). If this contamination occurs the service change
interval on Extended Life Coolant will be reduced from 6 year/150,000 miles to 3 years/30,000 miles.
1. Partially drain the cooling system.
2. Remove the upper radiator hose.
3. Remove the water outlet connection.
1. Remove the bolts.
2. Remove the water outlet connection.
4. Remove the (A) water thermostat and discard the (B) O-ring.
Installation
NOTE: Thermostat must be installed as illustrated.
1. Use a new (A) O-ring to position the (B) water thermostat in the (C) upper intake manifold.