rollinsmoke99 Posted December 3, 2014 Share Posted December 3, 2014 my 2004 granite dump truck always has more hours than miles because of idling, what is a good number of hours to change the engine oil? Also my my engine light came on ( the lightning bolt) and when I check the code it flashes 8-5 and sometiimes 8-1 and i think that code is for the uni pumps for cylinder number 5 and 1? Quote Link to comment Share on other sites More sharing options...
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