What are the opening hours?

Monday 7:30am - 4:30pm Tuesday 7:30am - 4:30pm Wednesday 7:30am - 4:30pm Thursday 7:30am - 4:30pm Friday 7:30am - 4:30pm

The Diesel Doctor

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United States
El Cajon, CA
The Diesel Doctor

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Been in business since 1980. Automotive repair shop in El Cajon specializing in diesel repair, and any other automotive repairs. Opened up Diesel Doctor in 1981.

I have finished Diesel School in 1980. First it was mobile for 5 years then I opened the shop for ten years. And went back to be mobile ever since. I have worked with both gasoline and diesel engines, all small engine diesels from marine to transport trucks, automotive. Now specialized in Fords, Chevys and Dodges, emergency equipment, fleets and privately own vehicles. Familiar with MTS Inspections and CHP inspections. I carry ASE, Brake and Light Certificates, Just finished GM tech class.

10/28/2026

Just another day at the shop, keeping our team strong for those heavy-duty jobs. Gotta be ready to handle anything that rolls through our doors here in Bostonia.

10/27/2026

Remember that feeling when your trusty workhorse finally needs a tune-up? Here at The Diesel Doctor, we understand. We're your neighbors right here in Bostonia, keeping your mid-size commercial vehicles and medium-duty trucks running strong. Give us a call at (619) 749-9286 or visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021 to learn more about our diesel mechanical, oil, and brake repair services.

10/26/2026

Myth: Diesel trucks don't need frequent oil changes. Fact: Mid-size and medium-duty diesel engines, especially those used commercially, require consistent oil maintenance to prevent excessive wear and ensure optimal performance.

10/26/2026

Interested or know someone who is? Give us a call or stop by! ☎️📞

10/23/2026

Remember when auto repair shops had to be registered with the state and customers had rights like written estimates? The Diesel Doctor started way back, committed to transparency and service from day one. It’s a part of our history in Bostonia, CA.

10/23/2026

Is your diesel truck making strange noises or losing power? Don't let common issues sideline your ride! Regular maintenance, like timely fluid checks and filter replacements, can prevent costly repairs. If you're in Bostonia, California, and need expert diesel mechanical repairs, our team is here to help! Visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021, call us at (619) 749-9286, or explore our services at https://www.thedieseldoctorsd.com/. 👍

10/21/2026

Did you know that regular maintenance on diesel engines can improve fuel efficiency by up to 15%? This is crucial for mid-size commercial vehicles and medium-duty trucks operating in Bostonia. Proper care ensures optimal performance and longevity.

10/20/2026

When it comes to keeping our community's essential vehicles running smoothly, what's the one maintenance task you find yourself asking about the most? We're always here to help answer those questions. Feel free to reach out to us at (619) 749-9286 or visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021. You can also find more information on our website, https://www.thedieseldoctorsd.com/.

10/19/2026

Proper maintenance of diesel engines is crucial for the longevity and performance of mid-size commercial vehicles and medium-duty trucks. Regular oil changes and brake inspections are fundamental to ensuring operational efficiency and safety on the road.

10/17/2026

Ever have that moment when your diesel vehicle just doesn't feel right, maybe a strange noise from your brakes or a dip in performance? It’s often a sign that it’s time for a professional check-up. Regular maintenance, especially for oil and brakes, is key to keeping your diesel running smoothly and safely. If you're in Bostonia, California, and need expert care for your diesel, we're here to help. Visit us at 1301 Pepper Dr Suite C, El Cajon, CA 92021, or call us at (619) 749-9286. You can also learn more on our website: https://www.thedieseldoctorsd.com/

Address

1301 Pepper Drive Suite C
El Cajon, CA
92021

Opening Hours

Monday	7:30am - 4:30pm
Tuesday	7:30am - 4:30pm
Wednesday	7:30am - 4:30pm
Thursday	7:30am - 4:30pm
Friday	7:30am - 4:30pm

Website

https://www.thedieseldoctorsd.com/

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