Limited-Time Offer — Complimentary Diesel Emissions Health Check. No charge, no obligation.
Free Diesel Emissions Health Check for Your Truck
Noticing warning lights, power loss, regen issues, or strange diesel performance?
DPFR is offering a complimentary diesel emissions health check to help identify what may be going on before it turns into a bigger repair. We'll inspect your DPF, DOC, SCR, and EGR system and give you a straight answer — no pressure, no obligation.
Complimentary inspection available at our San Antonio, TX shop. Call to confirm availability.
Why Are We Offering This for Free?
Most diesel trucks on the road have emission system issues that haven't been caught yet — clogged EGRs, degraded DOCs, or DPFs that are close to failure. We'd rather help you find the problem early, when it's a quick fix, than see you come back after a full derate or a destroyed substrate.
No strings attached. You get a written report of your system's condition. If repairs are needed, we'll tell you what and why. If everything looks good, you'll leave knowing your truck is healthy.
No charge
Completely free inspection
No obligation
Repairs are your choice
Written report
Take it with you
What's Included in the Free Check
A complete inspection of every component in your diesel emission system
DPF Backpressure Test
We measure differential pressure across the filter to determine soot and ash load levels and flag filters approaching critical restriction.
DOC Efficiency Check
The diesel oxidation catalyst is inspected for substrate damage, contamination, and thermal degradation that reduces its ability to oxidize hydrocarbons.
SCR & DEF System Scan
NOx sensor readings, DEF quality, injector function, and SCR substrate condition are all evaluated for proper operation.
EGR System Inspection
EGR valve operation, cooler condition, and carbon buildup are assessed — a clogged EGR is one of the leading causes of DPF overloading.
Full Fault Code Scan
We pull all active and pending fault codes from the ECM and interpret them in the context of your emission system's overall condition.
Written Condition Report
You receive a written summary of findings with prioritized recommendations — no pressure, just the facts about what your truck needs.
Signs You Should Claim This Offer
You don't need a fault code to benefit from a health check. These are the situations where a free inspection pays off most.
How It Works
Simple, straightforward, no surprises
Drop Off or Schedule
Call us or schedule online. Most health checks are completed same day — drop off in the morning, pick up by afternoon.
Full System Inspection
Our technicians run the complete diagnostic protocol across your DPF, DOC, SCR, EGR, and related sensors.
Review Your Report
We walk you through the findings in plain language — what's good, what needs attention, and what can wait.
Decide Your Next Step
No pressure. You get the report and the recommendations. We're here when you're ready to act.
DPFR Free Diesel Health Check – Request Form
Fill out the form below and we'll confirm your appointment. Fields marked * are required.
Common Questions
Claim Your Free Diesel Emissions Health Check
Don't wait for a derate. Bring your truck in and we'll tell you exactly where your emission system stands — at no charge.