Gardiner Sinclair

09/17/2026

Winter Hours are in effect immediately.
7 AM - 7 PM

Also, make sure to click 'Add Coupon' in your DinoPay app to take advantage of additional fuel discounts! Please take advantage of these coupons.

07/03/2026

Effective immediately, Gardiner Sinclair will be now open to
8 pm.

Thanks for supporting your local business!

06/24/2026

Wednesday is our Open House with the Benchmade Rep! Special pricing plus all kinds of other goodies!

06/20/2026

06/04/2026

Today is the extra discount day for DINOPAY!

Need to use DinoPay App for discount. Questions? Come on inside Gardiner Sinclair and we will help.

See your app for program details but stop on by to save on fuel. Every little bit helps these days! June 4th is the larger discount day.

03/02/2026

HOT DOG ROLLER IS BACK ONLINE!

2 for $6.00 special.

That's right: get two Johnsonville rolleiier items. Mix or match.

Promo good thru the month of March!

Thank you for supporting your local friends at the Gardiner Sinclair.

01/27/2026

Hey folks. In case you missed the release of this video earlier, we wanted to highlight this again. This is not only an amazing prize but even a greater effort to support all of these volunteers at the Upper Yellowstone Snowmobile Club. Stop in and get the details for the couple of weeks at least before the main event March 14th in Cooke City.

12/22/2025

Merry Christmas! Just wanted to share an update for our Holiday Hours.

Wednesday - Christmas Eve (December 24th:) Close early at 4 pm

Thursday - Christmas Day (December 25th:) CLOSED

Friday - Day after Christmas Day (December 26th:) CLOSED

Saturday - Resume normal business hours

NEW YEAR'S DAY (Thursday, January 1st) - CLOSED

FUEL PUMPS ARE ALWAYS ON 24/7.

Please plan appropriately for any retail needs around these closures.

We appreciate your support and understanding as we give time for our employees to spend time with their family/friends.

Thank you for supporting your local business! Cheers!

11/03/2025

To ALL of the Gardiner Sinclair customers: we have started our winter operating hours. Effective immediately.
7 am Opening
7 pm Closure
Feel free to call us at 406-848-9403 if you have any questions.
Thank you for your support and understanding!!!!!!

10/31/2025

Hey Folks! Happy Halloween. Today only, from 3 pm till midnight, get an additional $0.10 off per gallon. Details below. Every dime helps and please take advantage. From your friends at Gardiner Sinclair.