NHTSA Complaint #11469820 — 2017 FORD F-350

Restricted CCV Separator causing excessive crankcase pressure buildup. 2017-2019 models of this engine have this CCV design, but the Crankcase Oil Separator (containing this part) was redesigned from 2020 forward for the same engine due to excessive complaints of buildup and costly secondary effects such as Charge Air Cooling Tube splits/failures. This modification was never offered to 2017-2019 model year vehicles with this engine. Servicing Dealer indicated that this failure, and secondary failures led to loss of engine oil, which leads to catastrophic engine failure while driving. There are no indications via OBD codes or dash warnings indicating there is an issue, giving a false sense of security to the driver, especially when towing large loads. This problem was discovered on this vehicle during a routine oil change when low engine oil was observed (less than 2 quarts out of 13 quart capacity present in the engine upon attempting to drain).