NHTSA recall 11V307000

What's wrong: Affects vehicles equipped with 5.4 or 6.8 liter engines that have been altered by roush to operate using the roush liquid propane autogas Fuel system. A valve in the system may have been mismachined allowing a propane leak.

Why it matters: A propane leak in the presence of an ignition source may result in a vehicle fire.

The fix: Roush will replace the defective valve with a correctly machined one. All the affected vehicles have been repaired, therefore, an owner notification letter will not be issued for this campaign.