60 MINUTE GUARANTEE
We’re standing by our word with the Foss Promise: we guarantee that your Express Lane oil change will take less than 60 minutes (from check-in to check-out), or your next oil change is on us. This is our promise to you.
How it works
- • Your service appointments will alternate between Express Lane and our Main Drive Thru.
- • Our Customer Care Team will confirm with you when you book your appointment.
- • We have assigned two dedicated Express Service Advisors to serve you.
- • We service all makes and models.
- • Enjoy complimentary service touches with every visit:
- Washer Fluid Top-Up
- Express Visual Health Check
- Quick Interior Vacuum
- Automatic Exterior Car Wash (Optional)
DEXOS OIL CHANGE
*Did you know GM Dexos Factory filled oil is a full synthetic! ACDelco Dexos1 Generation 2 Full Synthetic 5W30 Motor Oil -General Motors has created this specification for their factory fill motor oil to make it a Full Synthetic, higher quality product designed specifically to meet the needs of today’s and future generations of GM vehicles.Why use ACDelco Dexos1 Generation 2 Full Synthetic 5W30 motor oil?
- Dexos1 was already the most comprehensive engine oil specification
- Excellent for turbocharged gasoline engines.
- Lower volatility
- Utilizes higher quality base stocks oils Lower volatility
- Better oxidative resistance
- Latest Additive technology used.
MOBIL 1 OIL CHANGE
Mobil One is a Full Synthetic Oil and considered a premium oil offering ultimate in protection, it’s specifications meet or exceed those of other oils. The Choice of performance enthusiasts and performance engines. Offering the highest grade of protection in the most demanding situations
AUTOMOTIVE SERVICe & REPAIR
Roy Foss Thornhill Auto Repair & Service
For any Buick, GMC, and Chevrolet service needs in Thornhill, bring your vehicle to our dealership.
Our factory-trained technicians are equipped to handle it all, from basic maintenance to intensive repair. If you have any questions, then visit our Thornhill Chevrolet, Buick and GMC service department for more details.
When you visit Roy Foss Thornhill, you can be sure that your vehicles are being worked on by GM-certified service experts. Feel free to give us a call to schedule an appointment anytime. Let our dealership take care of your Chevrolet, Buick and GMC service needs in Thornhill today!
We work hard to ensure that your vehicle is back on the road as good as new. This is what makes our Thornhill, Chevrolet, Buick and GMC service department the go-to source for any kind of maintenance work.
SHOP TIRES AND RIMS
WE ARE YOUR TIRE STORE
Roy Foss Thornhill is the place to get all your tire needs. We provide competitive pricing and offer a 30 tire price match guarantee on each purchase of a set of tires.Shop Tires Now
Genuine GM accessories
YOUR GM VEHICLE IS AS UNIUE AS YOU ARE
From styling accents to functional enhancements, our Thornhill Buick, Chevrolet and GMC accessories department offers everything to customize your car.
We have the most extensive selection to help you personalize your ride.
At Roy Foss Thornhill, we help you make your car look more attractive and stylish. Choose from our wide range of Buick, Chevrolet and GMC Accessories today!
GENUINE GM PARTS
KEEP IT GENUINE
As your automotive dealership, we’re dedicated to delivering high-quality service to you at every step of the car ownership process. That means delivering genuine OEM parts to our customers whether they’re planning a DIY home auto project, need repairs at our dealership, or want to improve their car with new accessories.
Whether you’re considering maintenance, repairs, or accessorizing your vehicle, you can ensure you’re getting the right product at a fair price by purchasing your parts and accessories directly from our parts department.
All you have to do is place your order online, and we’ll give you a call as soon as it’s ready to pickup.