Service intervals, fluid guides, preventative maintenance, and long-term diesel ownership tips.
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.
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Modern diesel engines continue to dominate the heavy-duty truck world in 2025. Truck owners still rely on modern diesel engines like the 6.7L Cummins, 6.6L Duramax, and 6.7L Power Stroke for real-world work, long-term durability, and unbeatable torque. Despite changes in emissions technology and fuel standards, diesel remains the backbone of towing, hauling, and commercial use.
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Cold weather affects diesel engines more severely than gasoline engines, and not just because of the engines themselves. By design, diesels require high compression, strong battery output, and precise fuel behavior to start reliably — all factors that become more challenging as temperatures drop.
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