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Grease Monkey Oil Changes & More

4.4
(609 reviews)

Business Details

8885 Washington St, Thornton, CO
80229, United States
(303) 289-2458
https://www.greasemonkey.com/locations/co/thornton/8885-washington-st

About

Oil Change Service StationAuto Repair ShopAuto MaintenanceBrake Shop
Grease Monkey's certified pit crew provides oil changes and more for all of your vehicle's maintenance needs. Our pit crew team is knowledgeable, friendly, and quick! Done Fast. Done Right.™

Details

  • Requires appointmentNot available
  • Credit cardAvailable
  • DebitAvailable
  • RestroomAvailable

Location

Grease Monkey Oil Changes & More
8885 Washington St, Thornton, CO
80229, United States

Hours

Monday8:00 AM - 7:00 PM
Tuesday8:00 AM - 7:00 PM
Wednesday8:00 AM - 7:00 PM
Thursday8:00 AM - 7:00 PM
Friday8:00 AM - 7:00 PM
Saturday8:00 AM - 6:00 PM
Sunday10:00 AM - 4:00 PM
11/26/20268:00 AM - 7:00 PM
12/25/20268:00 AM - 7:00 PM

Products & Services

1 list · 9 items

Services

9 items

CHECK ENGINE LIGHT DIAGNOSTIC

Computer diagnostic scan identifies check engine light codes and engine issues. Our technicians explain what we found and provide clear estimates for recommended repairs—no guessing, no hard sell.

FLEET SERVICES

Commercial fleet maintenance programs with scheduled service, priority scheduling, and detailed reporting. Professional automotive care keeps your business vehicles running reliably and efficiently mile after mile.

FUEL INJECTOR CLEANING

Professional fuel system cleaning removes deposits from injectors, intake valves, and combustion chambers. Restores fuel efficiency, engine power, and smooth operation for better performance at the pump and on the road.

HIGH MILEAGE OIL CHANGE

High mileage oil change for vehicles over 75,000 miles uses specialized formula with seal conditioners and additives. Designed to reduce oil consumption, help prevent leaks, and protect aging engine components.

MULTIPOINT VEHICLE INSPECTION

Free 16-point inspection with every oil change covers fluids, brakes, tires, belts, hoses, battery, and filters. Complimentary check helps catch small issues before they become big, expensive problems.

OIL CHANGE SERVICES

Fast oil change with standard, synthetic blend, or full synthetic options done in under 15 minutes. Includes new filter, fluid top-off, and free 16-point inspection while you stay in your car.

TIRE PRESSURE CHECK

Complimentary tire pressure check with service includes adjustment to manufacturer specifications. Proper inflation improves fuel economy and extends the life of your tires.

TIRE ROTATION

Tire rotation service promotes even tread wear and extends tire life. Regular rotation based on your owner's manual—typically every 5,000-7,500 miles—maximizes your tire investment and maintains balanced handling.

TRANSMISSION SERVICES

Transmission fluid exchange removes and refills nearly 100% of fluid including the torque converter. Maintains smooth shifting and transmission performance while helping prevent slipping, hard shifts, and costly failures.

Reviews

4.4
609 reviews
5 stars
471
4 stars
50
3 stars
14
2 stars
8
1 star
66
  • EV
    elizabeth valverde
    2 days ago
    1.0
    Bad very slow service and charged me for something I didn't get and worker was cussing and got mad
  • MT
    Mike Tagg
    4 days ago
    4.0
    oil change on low mileage car with cabin filter replacement. over satisfied with the service
  • BM
    Brandi Martinez
    Jul 3, 2026
    5.0
    Great experience! Jeff answered all my questions and took great care of my car.
  • AK
    Abdul wahab Karimi
    Jun 21, 2026
    1.0
    I went in for an oil change, air filter replacement, and cabin filter replacement. Unfortunately, my experience was very disappointing and unprofessional. After the service, when I arrived home, multiple warning lights appeared on my dashboard. I brought my car back to them three separate times. Each time, they only ran engine diagnostics and never properly checked under the hood to inspect the actual issue. Not only was the problem not fixed, but the staff also spoke to me very rudely. Eventually, they refused to address the issue at all, despite the fact that I paid $180+ for the service. When I later opened the hood myself, I noticed that a cabin filter or engine air intake pipe had been left disconnected and was not reinstalled properly after the service. Leaving such an important part unsecured is extremely careless and could have caused serious damage to my engine due to overheating. If major damage had occurred, who would have taken responsibility? Based on my experience, I would not recommend this place to others. The service was poor, the work was careless, and the customer service was unprofessional and rude. See the pictures below…
  • CS
    Connie Sowers
    Jun 13, 2026
    5.0
    We were on our way to our grandson’s baseball game when we got a warning in our vehicle for low on oil. We stopped at this Grease Monkey, and though they were not open yet they jumped to our aid! Gave us a complimentary top-off, and could not have been nicer! Highly recommend!

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