ARCO of Diamond Bar offers quality TOP TIER™ gas and a wide variety of drinks and snacks. The store associates are friendly, welcoming, and provide great customer service, making customers feel safe. Customers appreciate the consistently low gas prices, with the credit price often the same as the cash price. The store manager is praised for going above and beyond to help customers. Overall, this ARCO location is known for its positive atmosphere and exceptional service, making it a preferred destination for many in the area.
Cool ampm right by the freeway first thing I noticed plenty of business great location
December 2025
It's as good as Arco gets......cheap gas and no receipt paper ever.
September 2024
Chris was working tonight, and was super friendly. Made me feel comfortable immediately, and helped me with quite a few questions. much better experience than I'm used to at gas stations. Will be coming back.
