The EPA (Environmental Protection Agency) recently eased requirements for U.S. diesel operators. The new regulations come as a breath of fresh air to businesses and individuals alike. Moreover, the move may signal more diesel-friendly regulations to come.

Beginning with the 2027 model year, new diesel vehicles and equipment will no longer be faced with “limp mode” related system shutdowns when DEF (diesel exhaust fluid) runs empty. Previous regulations reduced vehicle speed to 5mph within 4 hours of running dry on DEF. This loss of equipment speed threatened every diesel operator with productivity loss and complete job stoppage. It was an albatross that both large and small businesses deemed unacceptable.

The new regulations, while still a threat to job production, are far less daunting. For diesel powered pickups, drivers will have 4,200 miles or 80 engine hours after a DEF fault is detected before a 45mph limit is applied to the engine. Previously, diesel pickup engines were reduced to 5mph as soon as 4 hours after a DEF fault has occurred. The new guidelines will not only give drivers time to react to the DEF fault, but it will also allow the diesel pickup to be driven to purchase more DEF.

This regulation relaxation is a very welcome change, but could it be a signal of more to come? One could certainly argue that the new leadership of the EPA is at least willing to listen to diesel operators and give their concerns consideration while also taking common sense steps to protect the environment.

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