Sinclair Gas Station

Gas Stations
Hours:
1425 E 4th St, Ontario CA 91764
(909) 391-1840 Directions

Hours

Monday
Open 24 hours
Tuesday
Open 24 hours
Wednesday
Open 24 hours
Thursday
Open 24 hours
Friday
Open 24 hours
Saturday
Open 24 hours
Sunday
Open 24 hours

About Sinclair Gas Station

Sinclair Gas Station offers a century of trusted American fueling with iconic DINO® and DINOCARE™ TOP TIER™ gasoline. The station provides top tier gasoline at a great price, usually on par or better priced than Costco, with better quality gas than area stations. Prices are decent, though the place felt a bit cluttered and could use organization. Customer service is very friendly and kind; on one occasion, the owner gave a jumpstart to a customer with a low battery. Overall, not a bad pit stop, but there is room for improvement.

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Most Recent Reviews

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  • June 2026
    Stopped by the gas station to fill up and grab some snacks. The prices were decent, but the place felt a bit cluttered and could use a little organization. Overall, not a bad pit stop, but room for improvement.
  • April 2026
    Great gas prices in town. Competitive prices, many times the same price as surrounding Costcos. In one occasion, I couldn't start my car beacuse of low battery and the owner came out and gave me jumpstart and I was able to make it back home. Very friendly and kind customer service. Recommend!
  • December 2025
    This station does not support Sinclair app “pay at pump” feature - only debit or credit. Pump interface needs maintenance and updating. Cashier wouldn’t help - not a good experience, overall.

More Comments(11)

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Sinclair Gas Station

Gas Station in Ontario, CA 1425 E 4th St, Ontario (909) 391-1840 Website Suggest an Edit