Comprehensive Diesel Maintenance Services

Diesel Preventative Maintenance You Can Count On

Above & Beyond Diesel Maintenance Services

Regular preventative maintenance is a must if you want to keep your diesel engine running smoothly. With nearly 30 years of experience and more than 50 years of combined experience specializing in light duty diesel vehicles, AG Auto is here to handle all your preventative maintenance needs so that you can drive with utmost confidence and peace of mind.
Diesel Particulate Filter Service / Cleaning
Diesel engine flushes will result in an increase in compression, due to dissolving, dispersing, and removing carbon around piston ring grooves.
Schedule Service
EGR Cooler System Service / Cleaning
An EGR cooler service will help keep your emission system in top notch shape with minimum break downs.
Schedule Service
VGT Turbo Service
A VGT (variable geometry turbo) service will help keep the turbo running at its best.
Schedule Service
Diesel Engine Oil System Cleaning / Flush
A diesel engine oil flush will help keep the engine clean and the injectors in top notch shape.
Schedule Service
Induction / Intake System Cleaning / Service
Induction system cleaning service will remove carbon and other deposits to improve your diesel engines throttle response, power, and fuel economy.
Schedule Service
Fuel Injection System Service / Cleaning
Fuel inection system need to be cleaned to give you better gas mileage, increase engine performance, restore a smooth idle and protect from possible future repairs.
Schedule Service
Glow Plug Replacement Service
Glow plug will eventually fail and replacement is not like replacing spark plugs, it can be more difficult and labor intensive.
Schedule Service
Minor Service (Oil Change)
An oil change is an easy and inexpensive way to maintain the health of your car or truck.
Schedule Service
Major Service – Fuel Filter, Air Filter, Lube Doors / Window / Hinges
We recommend having the commonly neglected major services completed on your vehcile once a year or every ten to twelve thousand miles.
Schedule Service
HVAC System Service / Cabin Air Filter
Having your vehicles HVAC system serviced will positivly impact the efficiency of the heating and cooling system in your car, not to mention the air quality.
Schedule Service
Automatic Transmission Fluid Service
Over time, transmission fluid picks up dirt and grim and it is important to have a the fluid serviced to prevent severe damage to your transmission.
Schedule Service
Brake Fluid Exchange / Service
Your brake fluid should be clear or at least translucent, if you notice a brown color, it means you should have your fluid flushed.
Schedule Service
AC Refrigerant System Service
Cooling system services will keep your car running at its peak temperature and help avoid costly repairs.
Schedule Service
Power Steering Fluid Exchange / Service
If you notice any difficulty steering your vehicle, it is time to have your power steering fluid checked.
Schedule Service
Timing Belt Replacement
Your vehicles timing belt should be replaced about every five years to avoid engine damage if the belt should break.
Schedule Service
Cooling System Service
Proper auto air conditioning system services will keep you comfortable and safe while in your vehicle.
Schedule Service
Tire Rotation Service
Scheduled tire rotations will give your tire longer tread life, imrove gas mileage, and increase tire performance.
Schedule Service
Shocks / Strut Replacement Service
If your car ride is getting increasingly bumpy or you feel your vehicle pulling in a certain driection it is time to have your shocks and struts checked.
Schedule Service
Clutch Fluid Exchange / Service
Clutch fluid is brake fluid, but it plays an important role in the operation of the clutch because the fluid is stored in the clutch master cylinder.
Schedule Service
Rear Differential Fluid Service
The differential needs to be properly lubricated in order to stay strong and to keep the wheels turning at different speeds, while still providing power to your vehcile.
Schedule Service
Transfer Case Fluid Service
The transfer case fluid should be changed regularly to reduce the chance of any drivability related concerns, this will prevent a future differential replacement.
Schedule Service
Manual Transmission Fluid Service
Manual transmissions use a more standard oil, but still need regular fluid maintenance to extend the life of the transmission.
Schedule Service
Front Differential Fluid Service
Your differential job is to compensate for the differences in wheel speed when turning, so it is important to make sure that the fluid is clean to keep you safe on the road.
Schedule Service
Windshield Wiper Blades
Wiper blades need to be checked regularly, hot air can dry and crack the blades leaving them ineffective when they are needed.
Schedule Service
Battery Connection Service and Replacement
Battery cables and terminals provide the necessary electrical path to transfer the battery power to the entire vehicle, so replacing older cables will provide longer battery life and alternator operation.
Schedule Service
DEQ Checks
Our thorough DEQ checks help ensure your vehicle is properly maintained and your emission control systems comply with EPA regulations.
Schedule Service
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!
  • Portland OR
  • Vancouver WA
  • Oregon City OR
  • Salem OR
  • Beaverton OR
  • Hillsboro OR
  • Northeast Portland
  • North Portland
  • Gresham OR
  • Clackamas OR
  • Tigard OR
  • Tualatin OR
  • Lake Oswego OR
  • West Linn OR
  • Milwaukie OR
  • Forest Grove OR
  • Troutdale OR
  • Camas WA
  • Longview WA
  • And surrounding areas!
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.
Give Us a Call
Talk with one of our service advisors to get your questions answered and set a convenient time to bring your car in for inspection.
Bring Your Car In
We’ll give you repair options based on our thorough testing, so you can make a careful and fully-informed decision.
We’ll Handle the Rest
We’ll get the job done right and provide a detailed report of the work done, including a list of future repairs to keep in mind.
I had extensive work done to a more than 20 year old Dodge 3500. Front end rebuild, engine tune, fuel system clean and flush, brake system flush and adjust and the list goes on. The price was reasonable given the amount of work done. The attention to detail and level of service was exemplary. The truck drives like new - much improved handling and performance. Highly recommended.

Dave A., Google Review

AG Automotive Service
5
2021-04-14T11:13:36-07:00

Dave A., Google Review

I had extensive work done to a more than 20 year old Dodge 3500. Front end rebuild, engine tune, fuel system clean and flush, brake system flush and adjust and the list goes on. The price was reasonable given the amount of work done. The attention to detail and level of service was exemplary. The truck drives like new - much improved handling and performance. Highly recommended.
I took my 2008 Chevy Duramax into AG Automotive when it was having some hard start and engine misfire issues. Turns out I needed new glow plugs and also had some bad wiring issues. AG took care of my truck quickly and even ended up saving me some money off the original estimate. AG stayed in constant communication with me while my truck was there and took care of it quickly and professionally. AG had been recommended to me based on their Diesel expertise and they lived up to their billing. The cost and professionalism were just an added bonus. Highly recommend these guys for Diesel repair and now that I know they also do gas vehicles, I'll be bringing in my girlfriend's Jetta from now on. Thanks AG!

Mark M., Yelp Review

AG Automotive Service
5
2021-04-14T11:25:09-07:00

Mark M., Yelp Review

I took my 2008 Chevy Duramax into AG Automotive when it was having some hard start and engine misfire issues. Turns out I needed new glow plugs and also had some bad wiring issues. AG took care of my truck quickly and even ended up saving me some money off the original estimate. AG stayed in constant communication with me while my truck was there and took care of it quickly and professionally. AG had been recommended to me based on their Diesel expertise and they lived up to their billing. The cost and professionalism were just an added bonus. Highly recommend these guys for Diesel repair and now that I know they also do gas vehicles, I'll be bringing in my girlfriend's Jetta from now on. Thanks AG!
5
2
AG Automotive Service
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.
Accurate Diagnostics
Trustworthy Recommendations
Quality Workmanship