Diamond Gas & Mart in Manteca (824 E Yosemite Ave)

Do NOT go here!!! The owner/manager woman is crazy & will probably rip you off if she can! ...The nozzle I used was NOT fitted with the auto-shutoff mechanism, & once my tank was full, gas began to literally spray out, on & around my car....the woman tried to blame me saying there was something wrong with my car!! ...AND insisted I pay for all gas pumped! Even though my tank was not on empty when we pulled in, I agreed to pay for no more than the capacity of my tank as shown to her in my owner's manual, just to get out of there. ...I had been swayed by the low price, & at 1st thought the manager/owner was very friendly, but then it got weird with the stories she told me about other customers, & how she dealt with them....random stories, out of the blue. I think she was trying to sound cool, but it just began to feel really sketchy! She finally walked away, & I was able to sit down in my car when I realized my tank was overflowing!! Completely unbelievable experience, but absolutely T

You get an additional price break if you use the Sinclair app. Also saves a trip inside to pay.

Good

Great and clean gas station!

wow, what a wonderful gas price. branded gas at no name price.