Seafoam...yeah I know
For every ten threads I read about seafoam that praise it, it seems there are ten more that say it caused a problem in their truck.
My question is, if directions are followed correctly, is there a risk of causing a problem? If not, why then so many horror stories??
My truck is running good, but am about to do a full tune up and read its best to seafoam first. Is it worth it?