Oil Change Service StationAuto Repair ShopBrake ShopAuto MaintenanceAlternator Repair
Located at 6140 Firestone Blvd., in Firestone, CO, Grease Monkey offers full-service oil changes, fluid exchanges, and preventive maintenance. Trust our skilled technicians for efficient service and excellent customer care.
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
4.2
817 reviews
5 stars
582
4 stars
71
3 stars
26
2 stars
39
1 star
99
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Tiffany
Jun 25, 2026
1.0
Broke a hose on my vehicle trying to get to my oil filter. Proceeds to tell me they can fix it but I would have to pay for it. Then tried to charge me $45 more than my previous times and told me prices went up. Not once while I was waiting or when I spoke to the tech, which turned out to be the one that broke my hose, did anyone go over pricing and let me know that prices had gone up. Ive never in my adult life paid that much for an oil change. Not to mention have the store manager break something on my car only to tell me I would have to pay to fix it. Car overheated twice and I had to pay for a tow trunk to come out. Horrible horrible customer service. Avoid Grease monkey at all cost!!! Not to mention I had antifreeze go all over my engine, driveway and myself!!
BB
Bill Bentley
Jun 16, 2026
4.0
Experience was good, they could’ve used one more employees this morning as they only had one Bay working. But other than that, it was fine.
AK
Amanda Kizer
Jun 15, 2026
1.0
I am beyond disappointed with my most recent experience at Grease Monkey.
About two weeks ago, I brought my own vehicle in and was helped by a manager named Dewhite. He was polite, professional, respectful, and genuinely kind. As someone who doesn’t know much about vehicles, he took the time to explain everything he was recommending without making me feel embarrassed or pressured. He even took the time to ask if he could give my daughter a popsicle while we waited. Then apologized for the wait. He made us feel welcome, valued, and confident that we were making the right decisions for our vehicle. He even opened the door for us when we left. Based on that experience, I had no hesitation bringing my son’s vehicle back. Unfortunately, this visit was the complete opposite. I thought maybe Dewhite was not working, but found out that he is no longer with the company. I also found out that the person I had been talking to this time was the new manager. Who barely acknowledged either me or my son, wouldn’t make eye contact, and honestly seemed like he didn’t want to be there. We specifically requested a tire rotation, but later were told it wasn’t done because we had pulled into the “wrong lane.” Then they proceeded to tell us we could have it done if we waited until the other lane was open, or we could come back another day. They replaced the air filter without asking, even though my husband had just replaced it himself. To make matters worse, they apparently used the wrong oil in my son’s vehicle and only told us the type of oil they put in until we were paying. The service ended up costing over $200, and when my son dropped me off at home afterward, he went back outside and discovered a massive oil leak running down our driveway and toward the gutter! My husband crawled underneath the vehicle and found that the oil bolt had not been tightened. Now I’m facing an additional $250 expense to have oil pressure washed from my driveway, and I could potentially be fined by my HOA if the oil reaches the storm sewer. If my son had just drove away after dropping me off, I’m almost certain his vehicle would have been damaged. What upsets me most is that I no longer feel comfortable trusting this location to fix their own mistake. I would rather have my son’s vehicle towed and pay someone else than return here. I’ve been coming here for years and I know there’s been a lot of changes in management. But if I had known Dewhite no longer worked at this location, I honestly would not have come back. The difference in service, professionalism, and attention to detail was night and day. One experience made me feel appreciated as a customer. The other left me with a leaking vehicle, a stained driveway, and a very expensive lesson.
I will not be returning and will be avoiding this location for the foreseeable future.
WS
Wen S
Jun 4, 2026
1.0
Went in for an oil change and received a new air filter as well. I guess they were in too much of a hurry to care how they put it back in. It was bunched up and all the screws weren’t put back correctly. My car started ROUGH and was horrible. It threw codes that it was full injectors to MAF filter so 700 dollars later - I retraced things ( I am not a engine person and you tube is my friend) the air filter being replaced incorrectly messed up the whole system. Grease Monkey is my quick go to but I will go back to my regular shop - these people don’t care about doing a good job.
JJ
Johnathon
May 28, 2026
5.0
I used to avoid coming to this Grease Monkey because every experience I had in the past left me feeling unimportant and poorly treated. That completely changed after the new manager, Dwight, took over the shop. From the moment I walked in, I was treated with genuine respect and kindness. Dwight took the time to thoroughly explain everything my vehicle needed instead of just trying to sell me on crap I didn’t need. He even brought out my old air filter and showed me exactly why it needed replaced, which I really appreciated. What stood out to me the most was how patient and compassionate Dwight was with my special needs daughter. He interacted with her like a human being, with kindness and respect, which honestly does not happen as often as it should. That alone meant more to me than I can explain. I also noticed Dwight encouraging and teaching his employees instead of getting frustrated or talking down to them like I had seen from previous management. The atmosphere in the shop feels completely different now — professional, welcoming, and positive. As long as Dwight is running this shop, I honestly won’t take my vehicle anywhere else.
What services does Grease Monkey in Firestone, CO offer?
Grease Monkey offers full-service oil changes, fluid exchanges, preventive maintenance, brake and alternator repairs, and general auto maintenance.
Where is Grease Monkey located in Firestone, CO?
Grease Monkey is located at 6140 Firestone Blvd, Firestone, CO 80504, US.
What are the operating hours of Grease Monkey in Firestone, CO?
Grease Monkey is open Monday through Friday from 8:00 AM to 7:00 PM, Saturday from 8:00 AM to 6:00 PM, and Sunday from 10:00 AM to 4:00 PM. The shop is closed on November 27 and December 25, 2025.
How can I contact Grease Monkey for an appointment or inquiry?
You can call Grease Monkey at +1 303-678-1616 or email them at retail9@greasemonkeyintl.com or aaguilar@fullspeedautomotive.com.
Does Grease Monkey Firestone have an online presence where I can find more information?
Yes, visit their website at https://www.greasemonkey.com/locations/co/firestone/6140-firestone-blvd or their Facebook page at https://www.facebook.com/112911481819652 for more details.
Are there other automotive services nearby Grease Monkey in Firestone?
Yes, nearby automotive services include Monkey Shine Car Wash for car detailing, Christian Brothers Automotive for repairs, and CO Garage Door Repair Firestone for garage door services.
What dining options are available near Grease Monkey in Firestone?
Nearby dining options include Marco's Pizza, Hacienda Jalisco for Tex-Mex cuisine, Subway sandwich shop, Baskin-Robbins ice cream shop, and Little Caesars for pizza delivery.
Can I combine a visit to Grease Monkey with other errands nearby?
Yes, you can visit nearby businesses such as T-Mobile and Verizon stores for mobile phone needs, The UPS Store for printing and shipping services, and various beauty salons like Cost Cutters and Nail Care First.
Are there health services available close to Grease Monkey in Firestone?
Yes, Benchmark Dental Firestone, Firestone Dental Care, MyEyeDr., and Oak Meadows Village Dental offer dental and eye care services nearby.
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