Cleaning, Diagnostics, and Repair for Heavy-Duty Trucks
Winslow-Gerolamy Motors Limited provides DPF cleaning, emissions diagnostics, and repair services for heavy-duty trucks across Southern Ontario.
Modern diesel engines rely on emissions systems such as DPF, DEF, SCR, and EGR to maintain performance and meet regulatory requirements. Our service team is focused on keeping these systems operating efficiently to prevent downtime and maintain compliance.
Our Approach to Emissions Service
The service department at Winslow-Gerolamy Motors prides itself on providing an outstanding customer service experience with operational excellence. Our number one priority is to keep our customers’ businesses moving and growing.
Our highly skilled, professional staff work to maximize uptime through timely repairs and help lower operating costs through preventative maintenance. Our technicians are 310T certified and OEM trained.
Certified Technicians & OEM Support
Winslow-Gerolamy Motors Limited is a Certified Warranty Dealer for:
- Navistar (International)
- Cummins
- Allison
- Eaton
- Meritor
All emissions diagnostics, repairs, and warranty work are completed to manufacturer standards using approved tools and procedures.
DPF Cleaning Services
We provide professional Diesel Particulate Filter (DPF) cleaning to remove soot and ash buildup that can restrict airflow and reduce performance.
Our DPF cleaning process includes:
- Inspection of filter condition
- Cleaning to remove accumulated soot and ash
- Testing to ensure proper operation
Regular cleaning helps extend filter life, improve engine efficiency, and reduce the risk of system failure.
DPF units can be dropped off at the service department and are typically ready for pickup the following day.
Emissions System Diagnostics
Accurate diagnostics are essential to identifying emissions-related issues.
We use OEM-level diagnostic tools to:
- Retrieve and analyze fault codes
- Monitor emissions system performance
- Identify sensor and electrical faults
- Diagnose regeneration and DEF system issues
This allows us to identify the root cause of problems and complete repairs efficiently.
Emissions Systems We Service
We provide service and repair for all major emissions system components:
DPF (Diesel Particulate Filter)
Cleaning, inspection, and replacement
DEF System
Inspection and repair of DEF tanks, injectors, and sensors
SCR (Selective Catalytic Reduction)
Diagnostics and repair to maintain emissions compliance
EGR (Exhaust Gas Recirculation)
Cleaning and repair to prevent buildup and performance issues
Common Emissions Issues
We regularly diagnose and repair:
- DPF clogging and restricted airflow
- Failed regeneration cycles
- DEF contamination and crystallization
- Sensor and electrical faults
- Emissions-related engine derate
Addressing these issues early helps prevent more significant repairs and downtime.
Preventative Emissions Maintenance
Routine maintenance of emissions systems helps reduce the risk of failure and maintain consistent performance.
Preventative service includes:
- Regular DPF inspection and cleaning
- Monitoring DEF system operation
- Scheduled emissions system diagnostics
- Addressing fault codes before they lead to derate
Supporting Fleet Uptime
Emissions system performance plays a critical role in overall vehicle uptime.
We help fleets reduce downtime through:
- Fast and accurate diagnostics
- Timely repairs
- Preventative maintenance planning
- Reliable parts availability
Why Choose Winslow-Gerolamy Motors Limited
- Family-owned International dealer since 1952
- 310T certified and OEM-trained technicians
- Certified warranty provider for major OEMs
- Advanced diagnostic tools and emissions expertise
- Strong focus on uptime and efficient repairs
Frequently Asked Questions
A Diesel Particulate Filter captures soot from exhaust gases and must be maintained to ensure proper engine performance and emissions compliance.
Cleaning frequency depends on usage, operating conditions, and maintenance practices.
Common causes include excessive idling, short trips, incomplete regeneration cycles, and lack of maintenance.
Engine derate occurs when the engine limits power to protect itself due to emissions system faults or performance issues.
Yes. We use OEM diagnostic tools to identify and repair emissions-related issues.
Yes. We service DPF, DEF, SCR, and EGR systems for heavy-duty trucks.