Your Master Tech in Your Pocket
Free car care guides from a 25-year ASE Master Technician. No jargon, no upsells — just real answers.
Built by a master tech. For drivers.
The App
AI Diagnostics That Know Your Car
Not generic articles. Not a chatbot. Real AI diagnostics built on 25 years of master tech experience — for YOUR vehicle.
What's Wrong?
Describe your symptoms and get ranked causes, costs, and urgency — a real AI diagnosis for YOUR car.
Warning Lights
Tell it which light is on and your exact vehicle. Get specific causes — not a generic list.
Recall Checker
Enter your VIN once. The app checks for open recalls and alerts you when new ones drop.
Maintenance Schedule
Enter your vehicle and mileage. Get alerts when service is due. Never miss an oil change again.
How Do I?
Step-by-step instructions for basic car tasks — jump starts, tire changes, fluid checks, and more.
Understand Your Estimate
Upload or type in a shop estimate. The app tells you if the price is fair and what to watch for.
Free plan available. No credit card required.
Popular Guides
The most common car questions, answered by a master tech.
How to Jump Start a Car (The Right Way)
Learn how to jump start a car safely with this step-by-step guide from a 25-year ASE Master Tech. Correct cable order, common mistakes, and when to call a pro.
How to Change a Flat Tire (Step-by-Step)
Learn how to change a flat tire safely with this step-by-step guide from a 25-year ASE Master Technician. Includes jack points, torque specs, and pro tips.
Check Engine Light: What It Means and What to Do
Check light on? ASE Master Tech explains check engine light meaning, common causes, steady vs flashing, costs, and what to do next.
How Often Should You Change Your Oil?
ASE Master Tech explains real oil change intervals. The 3,000-mile myth is dead. Learn how often to change your oil by oil type, driving style, and vehicle.
How to Check Your Car's Fluids (All of Them)
Learn how to check engine oil, transmission fluid, coolant, brake fluid, and more. Step-by-step guide from a 25-year ASE Master Technician.
ABS Light On: What It Means and What to Do
ABS light on your dash? A 25-year master tech explains what the anti-lock brake light means, common causes, and whether it is safe to drive.
Browse by Category
Warning Lights
What every dashboard light means and what to do when they come on.
Maintenance
Oil changes, fluid checks, tire care, and everything you need to keep your car running right.
Repairs & Costs
What repairs actually cost, what parts do, and how to avoid getting ripped off.
Emergency
Jump starts, flat tires, and what to do when something goes wrong on the road.
Car Education
Learn how your car actually works. No jargon, no fluff — just real knowledge from a real technician.
Who Writes These Guides?
Anthony Calhoun — 25-year ASE Master Technician, GM ASEP graduate (2003), A1-A8 certified. He's diagnosed and repaired thousands of vehicles, trained dozens of technicians, and now he's putting that knowledge directly in your hands.
No corporate marketing team. No AI-generated fluff. Every guide on this site comes from decades of real shop experience.
Read his full story →The Guides Are Free. The App Is Your Mechanic.
AI-powered diagnostics that know YOUR car, YOUR problem, and YOUR budget. Not just general articles — real answers.
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