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Grease Monkey

4.7
(1,058 reviews)

Business Details

384 State Street, North Haven, CT
06473, United States
(203) 248-9112

About

Oil Change Service StationBrake ShopAuto Air Conditioning ServiceAuto Maintenance
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
384 State Street, North Haven, CT
06473, United States

Hours

Monday8:00 AM - 6:00 PM
Tuesday8:00 AM - 6:00 PM
Wednesday8:00 AM - 6:00 PM
Thursday8:00 AM - 6:00 PM
Friday8:00 AM - 6:00 PM
Saturday8:00 AM - 6:00 PM
Sunday9:00 AM - 4:00 PM
11/26/20268:00 AM - 6:00 PM
12/25/20268:00 AM - 6:00 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

4.7
1,058 reviews
5 stars
940
4 stars
49
3 stars
10
2 stars
17
1 star
42
  • KD
    Kristen D
    2 days ago
    5.0
    Corey and Pat were amazing! They made me feel comfortable and took care of everything that my care needed! I appreciate all of their knowledge and help! I will definitely come back again!
  • CC
    casey
    Aug 21, 2026
    5.0
    They really helped me and explained things to me, and didn't lie to me like other places do to females. Thank you guys so much for your service! Really cool place and people.
  • BZ
    Brittney Z
    Aug 16, 2026
    1.0
    I am a regular customer and usually have no issues but lately I don’t know what is going on with management I went through the car wash and my mirror broken off. The guy didn’t even pay attention when I told him twice and told me to talk to someone else That guy didn’t even seem to care either then my dad came for an oil change and the person working on the car never put the cap or seal right and there was a leak and cost us $800 to fix I think this management needs to look at the jobs being done because they used to be great
  • JW
    Julia Wynter
    Aug 9, 2026
    1.0
    I am extremely disappointed with the service I received here today. I brought my vehicle in for an oil change because I am preparing to drive approximately 15 hours back to my home state of Illinois tomorrow and wanted to make sure my vehicle was properly serviced before such a long trip. I was actually still about 1,000 miles away from my next scheduled oil change, and my vehicle had not given me an oil change, battery, or check-engine warning. I was simply trying to be proactive before traveling. When I arrived, I was checked in and was told that there was supposedly no oil in my car, which immediately concerned me because my vehicle had given me no indication that I was low on oil. After being told this, I was also charged a cleaning fee. In addition, they did not have the oil I originally requested in stock, so I was forced to use a higher grade oil, which was a $25 difference, and I was only given a $15 discount to offset it. In total, I ended up paying $157 for this service. During the service, my battery died. The employee told me he didn’t know why it died and suggested that my battery might need to be replaced. I explained that my battery had been fine and that my vehicle’s app had not alerted me to any battery problems. Then the manager came over and asked the employee if he had left my vehicle’s lights on. The employee admitted that YES, he had left my lights on. Because of this, they had to JUMP-START my vehicle. After my vehicle was jumped, my CHECK-ENGINE LIGHT CAME ON. I arrived at this business without a check-engine light, without a battery warning, and with a vehicle that was running normally. I left with a vehicle that had to be jumped, a check-engine light illuminated on my dashboard, and new concerns about the overall condition and reliability of my car. What is even more frustrating is that there was NO OFFER to diagnose or correct the new issue, NO offer to compensate me, and seemingly no concern about the additional expense I may now have to pay to have my vehicle inspected because of something that occurred while my vehicle was in their care. I specifically came here because I am supposed to make a 15-hour drive the following day and wanted the peace of mind of knowing my vehicle had been serviced before traveling. Instead, I left MORE concerned about the condition of my vehicle than I was when I arrived. As a professional automotive service provider, leaving a customer’s lights on until the battery dies, having to jump-start the vehicle, not having the correct oil in stock, charging additional fees, and then sending the customer away with a check-engine light that was not on when they arrived—without offering to diagnose the issue or provide any compensation—is completely unacceptable. I now have to spend additional time and potentially additional money having my vehicle checked before I can safely make my trip. I would NOT recommend this location based on my experience today.
  • KM
    Kevin Mastriano
    Aug 9, 2026
    5.0
    These guys are awesome! Always easy to work with. Knowledgeable and they actually care. Corporate needs to fix there AC. These guys are working hard and I have nowhere to escape the heat. Hoping this post can get these hard-working guys some air conditioning.

Frequently Asked Questions About Grease Monkey

What services does Grease Monkey in North Haven provide?

Grease Monkey offers oil changes, brake services, auto air conditioning service, and general auto maintenance by a certified pit crew.

What are the operating hours of Grease Monkey at 384 State Street, North Haven?

Grease Monkey is open Monday through Saturday from 8:00 AM to 6:00 PM, and on Sunday from 9:00 AM to 4:00 PM.

Brand Certified Facts from Grease Monkey

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Certified August 30, 2026Yext Knowledge Graph
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