Gardiner Sinclair

Gardiner Sinclair Gas Station located 4 miles from the north entrance of Yellowstone National Park. We have two dinos!

01/01/2025

Just a reminder, Gardiner Sinclair will be closed tomorrow, New Year’s Day. Normal business hours on Thursday, January 2nd.

Thank you to all of customers who supported us in 2024. Cheers to 2025!

12/23/2024

Mammoth/Gardiner Community Message Board

12/23/2024

Merry Christmas everyone!!! The Gardiner Sinclair will be closed Tuesday (Christmas Eve) and Wednesday (Christmas.). Allow everyone to spend the time with friends and family. Thank you for everyone’s support in 2024. Cheers!

08/31/2024

Hey folks. Please notice we will be changing to our fall operating hours starting on Monday, September 2, 2024.

Effective Monday, Sept. 2, 2024:

-Open: 7 AM
-Close: 8 PM

Thank you again for supporting this locally owned Sinclair!

Hello, Everyone!We’re excited to announce that Sinclair will be closing at 5 PM tomorrow for a staff celebration to mark...
08/22/2024

Hello, Everyone!

We’re excited to announce that Sinclair will be closing at 5 PM tomorrow for a staff celebration to mark the end of a successful season.

Thank you for your understanding and support! The pumps will remain open 24/7 for your convenience using the Dino Pay app or a credit card.

We appreciate your business and look forward to serving you again soon!

06/01/2024

Folks, we are embarrased to say that the 30c off per gallon is not working with the app and we have no way to honor or control that discount. Hopefully there will be a make up day for this.

We are very sorry and are still honoring the buy one, get one coffee or fountain drink.

Sincerest apologies!

12/14/2023

SAVE UP TO $0.30 CENTS PER GALLON immediately.

For all existing and new customers.

Use Promo Code on DINOPAY: switch2save

Enjoy the same great Sinclair discounts you've come to love by using our mobile app, DINOPAY®. It's a free payment app that provides contactless payment at participating Sinclair locations; and like the Sinclair card, you’ll save instantly on every gallon, every time.

DINOPAY® is easy to get started. Simply download the app to your smartphone, create an account, then add your favorite credit card. If you use promo code 'switch2save' you'll get triple savings of 30¢ off per gallon on your next three fill-ups!

Ready to use your promo code?
Open the app, tap the gear icon in the upper right corner, followed by Promo Codes. Now enter promo code switch2save. You are all set. You'll get TRIPLE savings of 30¢ off per gallon on your next three fill-ups!

Promo code good only in the DINOPAY® app at participating Sinclair locations. Up to 25 gallons per fill-up. Expires 3/1/24.

PS - Just a reminder that the Sinclair Green Credit Card will be retired on December 31, 2023.

Address

375 U.S. Highway 89 S
Gardiner, MT
59030

Opening Hours

Monday 7am - 7pm
Tuesday 7am - 7pm
Wednesday 7am - 7pm
Thursday 7am - 7pm
Friday 7am - 7pm
Saturday 7am - 7pm
Sunday 7am - 7pm

Telephone

+14068489403

Website

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