Comprehensive Diesel Maintenance Services 

Diesel Preventative Maintenance You Can Count On 

Above & Beyond Diesel Maintenance Services 

Above & Beyond Diesel Maintenance is about more than changing the engine oil and fuel filter. It is about servicing the complete drivetrain system, all the vehicle’s fluids, and keeping the emissions systems clean. These regular cleanings to the intake and high-pressure fuel systems will keep build up from occurring. Preventative maintenance for your diesel engine is essential to the safe operation of your vehicle. Planning a maintenance schedule will reduce the likelihood of breakdowns and costly repairs. Giving you the full benefit of a diesel’s lifespan.

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Do not go another day second-guessing the condition of your diesel vehicle. 

A Properly Maintained Diesel Vehicle Will:


A Diesel Vehicle with no Proper Preventative Maintenance Will:

Why is Diesel Preventative Maintenance So Important? 

Preventative maintenance can extend the lifespan of diesel trucks and improve fuel economy (even over 400,000 miles). It helps to maintain performance and power without losing horsepower as you tack on the miles. Preventative maintenance is a key component in protecting your investment. Diesel vehicles are not cheap. Scheduled maintenance will give you the highest number of miles with little need for repairs. Having a full maintenance record will ensure the highest resale value if you ever decide to sale

What does it include?

1. Diesel Particulate filter
2. EGR Cooler system service/cleaning
3. VGT turbo service
4. Diesel engine oil system cleaning/flush
5. Induction/intake system cleaning/service
6. Fuel injection system service/cleaning
7. Glow plug replacement servi


1. Minor service (oil change)
2. Major service (fuel filter, air filter, lube doors/window/hinges, etc.)
3. HVAC system service/cabin air filter
4. Automatic transmission fluid service
5. Brake fluid exchange/service
6. AC refrigerant system service
7. Power steering fluid exchange/service
8. Timing belt replacement
9. Cooling system service
10. Tire rotation service
11. Shocks/strut replacement service
12. Clutch fluid exchange/service
13. Rear differential fluid service
14. Transfer case fluid service
15. Manual transmission fluid service
16. Front differential fluid service
17. Windshield wiper blades
18. Battery connection service and replacement

Why Choose AG Auto

AG Automotive is a family owned and operated independent repair facility that puts the customer first. Here at AG, we live and breathe the value of going the extra mile for our customers. With our top-notch team, we are ready to serve you and take care of all your needs! Give us a call and find out for yourself what makes AG different from all others!

Get Back on the Road Quickly & Safely
Partner with us and we’ll get right to the root of your vehicle’s problem rather than just treat the symptoms.
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Don’t Second-Guess the Condition of Your Vehicle

Many auto owners struggle to know if the right work was done the right way on their car. As a courtesy, we provide digital vehicle inspections and photos so you can quickly and easily see what our experienced, professional technicians are seeing. Overall, we go the extra mile to help you make informed decisions on the repair and maintenance plan of your vehicle, so you can drive with confidence every time you get behind the wheel.

No Matter the Model, We've Got You Covered
  • Ford Diesel Repair
  • Dodge Diesel Repair
  • Chevrolet Diesel Repair
  • GMC Diesel Repair
  • VW TDI Diesel Repair
  • Sprinter Diesel Repair
  • Jeep Liberty Repair
  • Jeep Repair
  • RAM Truck Repair
  • Subaru Repair
  • And many more!
Quality Auto Repair for Portland OR & Beyond!
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  • And surrounding areas!