Limited spots available each week — call or book online to reserve yours.
Free Diesel Emissions Health Check
Know exactly what's wrong — before it costs you.
Bring your diesel truck to DPF Resolutions SA and we'll inspect your entire emission system — DPF, DOC, SCR, EGR, and DEF — at no charge. You leave with a written condition report. No repairs required, no obligation.
$0 Cost
Completely free
No Obligation
Repairs are your choice
Written Report
Take it with you
Same-Day
Most inspections same day
Book Your Free Check
We'll confirm within one business day
What's Included — At No Charge
A complete inspection of every component in your diesel emission system, performed by certified technicians.
DPF Inspection
Visual and diagnostic check of your diesel particulate filter — soot load, pressure differential, and substrate condition.
DOC Assessment
Diesel oxidation catalyst efficiency check to confirm it's converting CO and hydrocarbons properly.
SCR System Check
Selective catalytic reduction system review including DEF quality, injector function, and NOx sensor readings.
EGR Inspection
Exhaust gas recirculation valve and cooler inspection for carbon buildup, leaks, and proper operation.
DEF System Review
DEF tank level, quality sensor, dosing pump, and injector check to prevent derate events.
Fault Code Scan
Full OBD-II diagnostic scan with a printed readout of any active or pending emission-related fault codes.
Signs You Should Claim This Offer
You don't need a fault code to benefit. These are the situations where a free inspection pays off most.
What Our Customers Say
"They found a failing DOC I didn't even know about. Saved me from a full derate on the highway. Couldn't believe it was free."
Marcus T.
Owner-operator, San Antonio TX
"We brought in two trucks for the health check. Both had issues we weren't aware of. DPF Resolutions caught them early and fixed both same week."
Fleet Manager, South Texas
5-truck fleet
"Straight shooters. They told me exactly what was wrong, what it would cost to fix, and didn't pressure me at all. Earned my business."
Roberto G.
Construction contractor
Ready to Know What's Really Going On?
Stop guessing. Get a free, written diagnosis from the diesel emission specialists San Antonio trusts. No charge. No pressure.
Common Questions
Book Your Free Diesel Health Check
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DPF Resolutions SA
8403 Speedway Dr, San Antonio, TX 78230 · Mon–Fri 8am–5pm