F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
(3) The middle pad is for MOLYBDATE which is not a performance measurement used in determining maintenance requirements for these
applications.
f.
It is okay to estimate a value between color blocks, but if uncertain about the color match, pick the lower numbered block, for example if nitrite
color is between F and E, use column E.
5. Coolant test results:
a. If the nitrite level exceeds 800 parts per million (PPM), no action is required, anticorrosion strength meets specification.
b. If the nitrite level is between 300 PPM and 800 PPM, anticorrosion strength is low. Add 32 fluid ounces of Motorcraft(R) Diesel Cooling
System Additive.
c. If nitrite level is less than 300 PPM, anticorrosion strength is very low and cannot be restored refer to Step 6.
6. Flush the cooling system with Motorcraft(R) Engine Cooling System Iron Cleaner and refill with 50/50 mix of Motorcraft(R) Premium Gold Engine
Coolant with Bittering Agent and distilled water as stated in the WSM, Section 303-03. A 50/50 mix of the Motorcraft(R) Premium Gold Engine
Coolant with Bittering Agent and distilled water provides the proper cooling system protection and nitrite level for operating temperatures to -34 °F
(-36 °C).
CAUTION
DO NOT ADD MOTORCRAFT® DIESEL COOLING SYSTEM ADDITIVE WHEN REFILLING THE COOLING SYSTEM AFTER A
COOLING SYSTEM FLUSH WITH MOTORCRAFT® ENGINE COOLING SYSTEM IRON CLEANER. THIS MAY LEAD TO POSSIBLE
ENGINE DAMAGE DUE TO VERY HIGH NITRITE LEVEL CONCENTRATIONS.
7. Verify pressure relief cap integrity by using the WSM, Section 303-03.
8. Follow recommended coolant service intervals:
Perform the updated flush and fill procedures under the special operating conditions and frequencies recommended in the chart: (Figure 1)
