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1999 Ford F-450 Super Duty Lariat 7.3L Coolant Contamination
Posted to Ford Engine on 3/5/2025 14 Replies

Thanks in advance. Truck came in with coolant in oil, and oil in coolant. diagnosed and replace oil cooler. after changing oil twice, oil is now clean. But the problem is after several flushes, with a variety of flush concentrates, the coolant still has so...

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car Vehicle Data

1999 Ford F-450 Super Duty Lariat

VIN 1FDXF47F6X
Engine7.3 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedCoolant Contamination
ConditionsOil in Coolant
Open Help Request

car Vehicle Data

1999 Ford F-450 Super Duty Lariat

VIN 1FDXF47F6X
Engine7.3 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedCoolant Contamination
ConditionsOil in Coolant