Mohsen Oil #1 is known for offering some of the lowest gas prices in San Diego, making it a popular choice for many drivers. Located about a mile east of the 5 freeway, it provides basic services with a clean and organized station, including a convenience store and snacks. The gas pumps are usually in good condition, and the staff greet customers with a smile. Customers appreciate that the station does not charge extra for debit or credit card use, which is rare. Despite often being busy, the station maintains a straightforward process, and many find the prices to be the best in town. Some reviews mention the chaotic traffic and long lines, but emphasize that waiting a few minutes is worth the savings. The station has recently improved lane directions with new arrows, reducing previous confusion. Overall, Mohsen Oil #1 is praised for its affordability and efficient service, making it a trusted spot for drivers seeking cheap gas.