Didn't want to hi-jack another post i was reading, so here it is. Does anyone know the specific difference between Champion L77JC4 or QL77JC4? I simply ask because my manual said to run l77j4 plugs, which aren't available anymore, and the replacement is the l77jc4, which I now run. The plugs i replaced though were QL77JC4. Just wondering what the actual difference is. Thanks for any help.
Topol_86
Topol_86