Diesel Mechanic

Meffert Oil Co., Inc.; Waunakee (WI); On-site; USD 30,307 - 46,838; Full time

Benefits offered by this job

Competitive hourly wage based on work

Health insurance

Paid vacation and holidays

Retirement plan with company match

Company-provided uniforms

Ongoing training and professional dev.

Stable, year-round employment

Family-owned company with supportive.

Job summary

Meffert Oil Co., Inc. is seeking an experienced Diesel Mechanic to join our petroleum transport fleet. You will maintain and repair trucks, trailers, and related equipment to keep operations safe and compliant.

This role requires a CDL, DOT knowledge, and the ability to diagnose engine and electrical issues. We offer competitive pay, benefits, and a family‑owned team environment.

Qualifications

• Experience as a diesel mechanic with CDL fleet or heavy truck experience.
• Knowledge of diesel engines, truck/trailer maintenance, and DOT requirements.
• Experience with diagnostics and electrical troubleshooting.
• Welding and fabrication experience is a plus.
• CDL and HazMat required.
• Strong work ethic, attention to detail, and ability to work independently.

Responsibilities

• Perform preventative maintenance on diesel trucks and petroleum transport trailers.
• Diagnose and repair diesel engines, transmissions, brakes, suspensions, steering systems, and electrical components.
• Inspect and maintain trailer equipment, including pumps, meters, hoses, valves, and loading/unloading systems.
• Perform DOT inspections and ensure compliance with federal and state regulations.
• Troubleshoot hydraulic, pneumatic, and air brake systems.
• Complete work orders and maintenance records accurately.
• Coordinate with drivers and management to prioritize repairs and minimize equipment downtime.
• Maintain a clean, organized, and safe shop environment.

Skills

Diesel mechanic

Diagnostics

Electrical troubleshooting

CDL experience

HazMat

Welding & fabrication

Job description

Diesel Mechanic – Petroleum Transport Fleet

Meffert Oil Company is seeking an experienced, dependable Diesel Mechanic to join our team. This position is responsible for maintaining and repairing our fleet of petroleum transport trucks, trailers, and related equipment to ensure they operate safely, efficiently, and in compliance with all DOT regulations.

If you take pride in quality workmanship, enjoy diagnosing and solving mechanical issues, and want to work for a family‑owned company that values its employees, we'd love to hear from you.

Responsibilities

• Perform preventative maintenance on diesel trucks and petroleum transport trailers.
• Diagnose and repair diesel engines, transmissions, brakes, suspensions, steering systems, and electrical components.
• Inspect and maintain trailer equipment, including pumps, meters, hoses, valves, and loading/unloading systems.
• Perform DOT inspections and ensure compliance with federal and state regulations.
• Troubleshoot hydraulic, pneumatic, and air brake systems.
• Complete work orders and maintenance records accurately.
• Coordinate with drivers and management to prioritize repairs and minimize equipment downtime.
• Maintain a clean, organized, and safe shop environment.

Qualifications

• Previous experience as a diesel mechanic (CDL fleet or heavy truck experience preferred).
• Knowledge of diesel engines, truck and trailer maintenance, and DOT requirements.
• Experience with diagnostics and electrical troubleshooting.
• Welding and fabrication experience is a plus.
• CDL and HAZMAT required.
• Strong work ethic, attention to detail, and ability to work independently.

Benefits

We offer a competitive compensation and benefits package, including:

• Competitive hourly wage based on experience.
• Health insurance.
• Paid vacation and holidays.
• Retirement plan with company match.
• Company‑provided uniforms.
• Ongoing training and professional development.
• Stable, year‑round employment.
• Family‑owned company with a supportive team environment.