2008 Ford Super Duty F350 Crew Cab FX4 Review - Long Term Report
22.01.09
The 6.4L has proven to be a bastion of reliability, a powerhouse of an engine, and runs so much quieter than other Power Stroke engines that we have had people wanting to know what engine we are running. The F-350 has also turned out to be as reliable as anything we have tested in recent months, with only a rear door-lock solenoid being replaced under warranty and a fuel-tank bracket recall.
While the F-350 is a great truck overall, we have had complaints about the truck's performance when in regen mode. Throttle response lags, strange intake and exhaust noises are heard, and the truck seems to have a slight flutter, feeling as if it is exorcising emissions demons. We are convinced that it also seems to be exorcising fuel out of the fuel tank during the regen cycle. At least now, after a recent computer reflash at the dealer, the driver information center now reports "Cleaning Exhaust Filter" while in regen mode.
When not towing, we have seen fuel economy start to improve, but it is still short of what the 6.0L and 7.3L Power Stroke engines were capable of. Otherwise it is still a happy relationship between our staff and the truck, as it is everyone's favorite rig when there is a hauling or a towing job.
Source: Four Wheeler
