Comprehensive Diesel Maintenance Services

Truck Maintenance You Can Count On

Above & Beyond Diesel Maintenance Services

You diesel truck is a big investment. It is a key piece of your work and lifestyle. That’s why it is so crucial to make regular service and maintenance of your diesel truck a priority. Regular tune-ups help maximize the life span of your diesel rig and prevent unforeseen, high-dollar issues from cropping up. At AG Automotive, we have been servicing all makes and models of diesel trucks for almost 30 years. Our team of experienced diesel mechanics will perform comprehensive assessments of all of your trucks systems and provide best-in-class maintenance work to keep your truck running at the top of its game. Check out a full list of our services below, or better yet – just give AG a call today to get scheduled!

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

Talk with one of our service advisors to get your questions answered and set a convenient time to bring your car in for inspection.

We'll Handle the Rest

Talk with one of our service advisors to get your questions answered and set a convenient time to bring your car in for inspection.

These guys were so amazing! I severely needed an oil change and they got me in right away. They were efficient, kind, and didn’t try to push sales, which I really appreciate. My rating for them is 5/5, for sure!

Brittany W. Facebook Review

AG picked up and delivered my girlfriends car once they changed the oil. They were right on time to pick the car up, they even cover the seat and wear gloves while in your car. I was surprised how much they did during an oil change. During the oil change they even informed me about a light that was burnt out and didn’t even try to upsell me on it like other shops do. I will bring or have my cars picked up and brought to this shop from now on. It was such a easy process!

J.W., Google 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!

Mark M., Yelp Review

AG provides the best truck service and repair we have ever seen… very professional and always gives you the best advice… willing to set a flexible schedule to fit our needs. We will definitely come back and choose AG for our future truck service and repair.

Weilei H., Google Review

I’ve been using AG Diesel since 2012 (4+ years) and they really do superior quality work. From general maintenance, to great advice, and even half an engine rebuild due to a bad head gasket, the parts they choose and the work they do is top notch.

Scott M., Yelp Review

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.