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Business Details
31 Years
experience
Your Trusted Auto Repair Experts in Oceanside, CA
Mastertech Automotive Experts Automotive Experts was founded in March 1995 by George 'Lou' Lewis and Rick Sing, two ASE-certified professionals with a shared vision to build a reputable automotive repair business rooted in technical excellence and community trust. Over 30 years, we have grown into one of North San Diego County's largest independent repair facilities, equipped with state-of-the-art tools and staffed by highly skilled technicians. Our team includes four service technicians and a master transmission rebuilder, all dedicated to delivering precise diagnostics and repairs for all makes and models, from routine maintenance to complex engine work. We prioritize transparency, investing in continuous training and technology to ensure accurate diagnostics and efficient service.

Our commitment to quality is reflected in our 15 service bays, two alignment machines, and the largest RV lift in North County, enabling us to serve diverse vehicle needs. With a focus on long-term customer relationships, we back all work with comprehensive warranties and maintain open communication throughout every service interaction. Our founders' deep local roots and dedication to ethical business practices have solidified our reputation as a trusted partner for automotive care in Oceanside and surrounding communities.
Services
Brake Repair Transmission Repair Oil Change Check Engine Light Diesel Repair Maintenance Services RV Repair Smog Certification Tire Services Electrical Diagnostics
Details
  • Year established: 1995
Highlights and features
  • 30 years of automotive repair expertise in North San Diego County
  • ASE-certified technicians with specialized diagnostic training
  • State-of-the-art facility with 15 service bays and RV capabilities
  • Transparent communication and detailed repair explanations
  • Military-friendly service with community-focused pricing
Associations and certifications
  • ASE
What people say
Honest, straight shooters Great customer service Expertise Trustworthy mechanics Fair prices
Services
Brake Repair
Our comprehensive brake inspections identify wear patterns and safety concerns before recommending repairs. Technicians use precision tools to measure rotor thickness, pad depth, and hydraulic system integrity. We replace components with manufacturer-approved parts while maintaining proper brake fluid levels and system calibration. This critical safety service prevents costly damage while ensuring optimal stopping performance for passenger safety.
Transmission Repair
Specialized transmission diagnostics utilize computerized code readers and road testing to identify mechanical and electronic failures. Our master rebuilder handles complete overhauls, clutch replacements, and fluid exchanges using specialized tools for modern transmission systems. We perform pressure tests and computer recalibrations to restore smooth shifting. Warranty-backed repairs cover both domestic and imported vehicle transmissions with precision engineering standards.
Check Engine Light
Advanced OBD-II scanners retrieve fault codes while technicians perform visual inspections of engine components. We test sensors, ignition systems, and emission controls to identify root causes rather than symptoms. Our multi-step diagnostic process includes test drives and component stress tests to ensure accurate repairs. This service prevents unnecessary part replacements while restoring vehicle performance and fuel efficiency.
Oil Change
We use high-quality motor oils meeting manufacturer specifications while replacing conventional and synthetic blends. Technicians inspect undercarriage components during oil changes and check fluid levels across all vehicle systems. Our process includes filter replacement with proper disposal procedures. This foundational maintenance service extends engine life while maintaining warranty requirements through documented service records.
Maintenance Services
Factory-recommended maintenance plans follow strict mileage intervals for timing belt replacements, fluid exchanges, and component inspections. Our 30k/60k/90k services include multi-point inspections covering brakes, suspension, and safety systems. We track service history to ensure compliance with warranty requirements while offering reminders for upcoming maintenance needs. This proactive approach prevents breakdowns and maintains vehicle reliability.
People
George Lou Lewis
Co-Founder
ASE Master Technician with expertise in emission repairs and electronic diagnostics. Built the business from a 4,500 sq ft facility to North County's largest independent repair shop. Recognized for technical innovation and community service.
Rick Sing
Co-Founder
ASE Certified Technician and former Oceanside Police Officer who brought operational discipline to the business. Managed day-to-day operations while maintaining technical excellence. Instrumental in establishing quality control systems.
David
Master Transmission Rebuilder
Specializes in complex transmission repairs including Allison and diesel units. Applies 20+ years of experience to diagnose and rebuild modern transmission systems with precision tools and manufacturer specifications.
Nate
Service Manager
Customer service expert with deep technical knowledge. Coordinates repair processes while maintaining transparent communication with vehicle owners. Recognized for resolving complex repair scenarios efficiently.
Questions
What services does Mastertech Automotive Experts Automotive Experts Automotive offer?
We provide complete automotive services including brake repair, transmission work, oil changes, check engine diagnostics, scheduled maintenance, and diesel repair for all makes and models.
Do you offer financing options?
Yes, we offer Synchrony Financing with 0% interest if paid in full within 6 months (credit approval required).
How can I schedule an appointment?
Request online through our website or call (760) 712-4209 during business hours (Mon-Fri 8AM-5PM).
What areas do you service?
We serve Oceanside, Carlsbad, Camp Pendleton, and all of North San Diego County.
Are your technicians certified?
All technicians are ASE-certified with specialized training in modern automotive systems and diagnostics.
Do you work on RVs and commercial vehicles?
Yes, we have specialized equipment including North County's largest RV lift for servicing large vehicles.