Sorry that i took so long..yes i normaly use the same brand plugs when installing the new ones.For my past Dodge veicles when i pull the plugs out they are champion every time.I have 16 spark plugs total in my truck..the top bank is good for 30,0000 miles and the bottom bank is good for 103,0000 miles.Right now i have 68,0000 miles on it and i will swap the top set in the fall.So far so good on my fuel milage and just two months ago it passed the ETEST.But NGK plugs may go in... im not so sure just yet.This is why i asked the question so im going to do some research to compare the two brands.The price of gas is crazy..it gos up and down in on day more than my fly on my pants lol.I dont know if it would make any difference between champion or NGK... who knows what impovement in performace this would make..thanks guys