if you put unleaded plus in a 2001 jeep cheerokee 4.0 can you get a gas knock
battery tested bad was old from 2006 wasnt having problems with it but replaced it to be safe a couple days before i put unleaded plus in it for the first time when it got down to an 8th of a tank i put regular back in it after changing battery it has a load knock when starting out what could be the problem