Plain-spoken articles on diesel maintenance, repair and ownership.
Learn how to clean a DPF the right way — from spotting warning signs to choosing between a forced regen, a shop cleaning, or replacement. Includes 2026 pricing, service intervals, and what's legal under EPA rules.
Bad EGR valve symptoms range from rough idle and stalling to power loss, failed emissions tests, and check-engine lights. Learn how stuck-open and stuck-closed valves act differently, which fault codes point to EGR trouble, and when cleaning beats replacement.
How much does an EGR valve cost to replace? Most diesel owners pay between $400 and $1,800 for parts and labor, depending on the platform and whether the cooler needs service too. Here's a full 2026 cost breakdown, symptoms, and what drives the price up or down.
DPF repair costs range from a $150 forced regen to a $4,000+ filter replacement. This guide breaks down 2026 pricing for cleaning, regen, and full DPF repair so you know what a shop quote should look like before you book one.
The EGR valve controls how much exhaust gas recirculates back into the intake to cut NOx emissions. Soot buildup, carbon clogging, and heat cycling are the top reasons it fails. Here's how it works, what breaks it, and what repair really costs.
DEF fluid is a urea-water solution that cuts NOx emissions from diesel engines. Learn how DEF works with SCR, why your truck needs it, what happens if you run out, and how to store it right.
EGR stands for Exhaust Gas Recirculation — a diesel emissions system that cuts NOx by recycling exhaust back into the engine. Learn how it works, common failure signs, repair costs, and why deleting it is illegal under the Clean Air Act.
A particulate trap is the diesel filter that catches soot before it leaves the tailpipe. Here's how it works, how it clears itself, what cleaning or replacement costs, and why deleting one is illegal.
Unopened DEF lasts about 1 year in warm storage and up to 2 years when kept cool. Learn real DEF consumption rates, storage rules, and how to spot fluid that's gone bad before it hurts your SCR system.
Oil, fuel filters, coolant, glow plugs — keeping a diesel healthy between shop visits
Injectors, turbos, fuel systems and what those trouble codes actually mean
DPF regens, DEF, EGR and SCR — how the emissions system works and fails
PM schedules, DOT inspections and keeping work trucks on the road
Motorhomes, tractors and farm diesel — service that comes to the field
Power Stroke vs Cummins vs Duramax, used-truck checks and ownership costs
What common diesel repairs cost and how to compare quotes
Emissions testing, delete laws and inspection rules by state
