Business Details
31 Years
experience
Expert Auto Repair Services in Oceanside
Founded in 1995 by George 'Lou' Lewis and Rick Sing, Mastertech has established itself as a trusted name in automotive repair across North San Diego County. Our founders brought decades of combined experience as ASE-certified technicians, specializing in emission repairs and electronic diagnostics. Over 30 years, we expanded our 4,500-square-foot facility into a 6,000-square-foot state-of-the-art shop equipped with eight lifts, alignment machines, and advanced diagnostic tools. In 2025, ownership transitioned to Jayson Bolster, an ASE Master Technician and former business owner, who continues our legacy of excellence while expanding services to include European vehicle models. Our team of certified technicians provides comprehensive repairs for domestic, Asian, and European vehicles, including specialized services for diesel engines, transmissions, and RVs.We maintain a commitment to transparency, offering honest assessments and detailed explanations of all repairs. Our facility supports both scheduled maintenance and urgent repairs, with a focus on customer education and satisfaction. With financing options available and a dedication to military-friendly service, we strive to make quality automotive care accessible to all our clients. Our 47 five-star reviews reflect our consistent delivery of reliable service, technical expertise, and community-focused values that have defined our business since inception.
Services
Brake Repair
Check Engine Light Service
Diesel Repair
Oil Change
Transmission Repair
30k Mile Service
60k Mile Service
90k Mile Service
Alignment Service
Smog Testing
Details
- Year established: 1995
Highlights and features
- 30 years of automotive repair experience with ASE-certified technicians
- State-of-the-art facility with advanced diagnostic equipment
- Comprehensive services for domestic, Asian, and European vehicles
- Transparent pricing with military-friendly discounts
- Synchrony financing options available for repairs
Associations and certifications
- ASE (Automotive Service Excellence)
What people say
Honest assessments
Expert technicians
Reliable service
Transparent pricing
Military-friendly
Services
Brake Repair
Our brake repair service includes comprehensive inspections, pad replacement, rotor resurfacing, and hydraulic system diagnostics. Technicians use specialized tools to identify wear patterns and ensure optimal stopping performance. We service all vehicle types with premium replacement parts and lifetime warranties on workmanship.
Transmission Repair
We handle complete transmission rebuilds, fluid exchanges, and computer diagnostics for automatic and manual systems. Our master transmission specialist works on domestic, import, and diesel applications with precision calibration equipment. Services include torque converter replacement and driveline balancing.
Check Engine Diagnostics
Our OBD-II diagnostic system identifies fault codes while technicians perform manual tests to confirm sensor readings and mechanical operation. We provide detailed reports explaining system faults and repair options with cost estimates for sensor replacement, ignition system repairs, or emission control component servicing.
Scheduled Maintenance
Factory-recommended maintenance packages cover oil changes, filter replacements, fluid flushes, and component inspections at 30k, 60k, and 90k mile intervals. Services include multi-point inspections and wear item assessments to maintain vehicle warranties and prevent breakdowns.
Diesel Repair
Specialized diesel services include high-pressure fuel system diagnostics, turbocharger maintenance, and exhaust aftertreatment repairs. We service heavy-duty trucks and towing vehicles with industrial-grade equipment for Cummins, Powerstroke, and Duramax engines.
People
Jayson Bolster
Owner
ASE Master Technician with 20+ years in automotive repair. Former business owner bringing expertise in European vehicle systems. Acquired Mastertech in 2025 to continue its legacy while expanding service capabilities.
Nate
Service Manager
Experienced technician with deep knowledge of import and domestic vehicles. Recognized for clear communication and customer-focused solutions. Handles service coordination and client consultations at the Oceanside location.
David
Transmission Specialist
Master transmission rebuilder with expertise in automatic and diesel systems. Performs complex overhauls and diagnostics using specialized equipment. Known for resolving challenging drivetrain issues across multiple vehicle platforms.
Bob
Senior Technician
Veteran mechanic with comprehensive diagnostic skills. Conducts thorough vehicle inspections and provides detailed repair explanations. Recognized in customer reviews for integrity and technical proficiency with older vehicle models.
Rick Sing
Co-Founder
Retired ASE Certified Technician and former Oceanside Police Officer. Co-founded Mastertech in 1995 with George 'Lou' Lewis. Instrumental in establishing the company's technical standards and community-focused business approach.
Questions
What types of vehicles do you service?
We service all domestic, Asian, and European vehicles including Audi, BMW, Ford, Toyota, and diesel trucks. Our expanded capabilities now include European models like Mercedes-Benz and Porsche.
Do you offer financing options?
Yes, we provide Synchrony financing with 0% interest if paid in full within 6 months (credit approval required). This applies to services over $100.
How can I schedule an appointment?
Call us at (760) 712-4209 or use our online appointment form. We offer same-day service for urgent repairs and maintain flexible scheduling for routine maintenance.
Are your technicians certified?
All our mechanics hold ASE certifications. Our team includes Master Technicians with specialized training in transmission repair, diesel systems, and electronic diagnostics.
What warranty do you offer?
We provide a 3-year/36,000-mile nationwide warranty on all repairs. This covers both parts and labor with free return visits for any related issues during the warranty period.
Do you handle insurance claims?
Yes, we work with all major insurance providers. Our staff assists with claim documentation and coordinates repairs for collision damage, mechanical breakdowns, and roadside assistance cases.
