97 Infiniti I30 is giving me codes P0130 and P0136 which are the 02 sensors, one upstream P0136 and the other downstream after cat P0130. Does it matter if I replace them with Denso, Bosch or Beck-Arnley, etc? Also, is it unusual to get both codes in the same week? I am suspicious becuase the codes came after using Seafoam in the gas tank, only about 2 ounces to a quarter tank?

 

Global automotive on ebay has a few different brands, but i bought ntk 02s ...ive had ntk 02s for a while now with no issues!!! i found mine for 23 bux shipped!