RE: Seafoam believer???
I've used it in my '94 Ranger pickup that had a serious knocking problem that the shop couldn't figure out.* It worked for a while but needed repeated applications. 'Cuz that wasn't the real problem.* A user's chat group (like this one) solved the problem for me in about 15 minutes after I asked the question.* So, after spending about $1,500 for the thieves to black box me it turned out to be a $1.59 problem - pull and clean the Mass Airflow Sensor.* But I digress (I'm still PO'd!) so, if it works for you ......