many times this has been discussed , work the search button and let your self be free ,and put your trucks updates in your sig so when you go searching for info people can help diagnose your questions easier, with out this info its a shot in the dark as 32 to 34 is about the max safest , however this amount will only help if you have the fuel to sustain it . again do some searching and read , you will find this place has a lot of great tips and help . Welcome to the place
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