Removing the Diesel Exhaust Fluid (DEF) tank from a semi truck is a controversial subject. Some states, like California, require all semi trucks to have DEF tanks installed.
Other states do not have any regulations on the matter. So, is it legal to delete DEF on a semi truck?
The answer depends on which state the truck is registered in and where it will be used. In most states, it is perfectly legal to remove the DEF tank from a semi truck as long as it does not interfere with any applicable regulations. It is also important to note that deleting the DEF tank can result in decreased fuel economy and increased emissions.
For example, in California all diesel-powered vehicles must have an approved emissions control system installed. This includes a DEF tank and system. The regulation states that “diesel-powered vehicles must comply with applicable emission standards for oxides of nitrogen (NOx) and particulate matter (PM).” If a semi truck does not meet these requirements, then it cannot legally be operated in California.
Another consideration when deciding whether or not to delete DEF on a semi truck is the potential cost savings. While there are some fuel economy benefits associated with deleting the DEF tank, they may be offset by decreased performance. Additionally, many maintenance costs associated with DEF systems can be avoided by removing them.
Conclusion:
In conclusion, whether or not it is legal to delete DEF on a semi truck depends on which state the vehicle will be registered in and used in. It is important to consider both potential cost savings and potential decreases in performance before making any decisions about removing the DEF system from a semi truck.
