I did a search and I have read all about the stuff, that is why I went out to buy a can. I plan on putting it in with 3/4 of a tank as to not over-decarbonize my engine.

I have just changed out my plugs and put the stock ones in as the previous owner had the training ones in both leading and trailing, but I was getting carbon buildup in the leading positions. I understand that the Seafoam can gunk up my new plugs, but that is a minimal cost.

My biggest concern is my O2 sensors. I have a stock one in the stock position, but I have a wideband in the mid pipe. Should I disconnect and remove it prior to using the Seafoam? If so, how should I block the hole? Is it safe just to run the Seafoam with the wideband in place since I am not running it very concentrated like some people do?

 

You can buy M18x1.5 oxygen sensor bung plugs on eBay pretty cheaply.

However, I have never heard of any negative consequence to oxygen sensors of using Seafoam. I've used it and several people here swear by it.

 

Yeah, its cold and I'm hungover and I really don't feel like crawling under my car right now or waiting for bungs off ebay. There are some posts that say it can foul up the plugs and O2 sensors.

I guess I'll take the risk.