Cold weather brings out the worst in diesel emissions systems, and if your truck suddenly seems to be regenerating more often, you’re not imagining it. Winter has a direct effect on DPF soot loading, exhaust temperatures, and how the engine manages incomplete combustion. In this guide, we break down exactly why regens increase when temperatures drop — and what you can do to keep your diesel running clean and efficient through the colder months, especially if you’re comparing used diesel trucks for sale in Texas during winter conditions.
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