Did the Seafoam today through a vacuum tube per DisoMike's pics and instructions and a can in the tank full of 93 oct. White smoke like crazy! Took about 5 miles on the highway to clear up. Service engine light came on. What now?

 

Reset the OBDII, most likely will show running rich.

 

the what? and how?

 

It will reset it self after a few starts.

 

It will clear by its self, but when your CEL comes on, there is a little port under the driver's side of you dash that an obd2 ( on board diagnostic Gen 2) scanner can hook to. Most Autozone stores and similar will plug in and give you the codes for free. If you say please, they wil reset the system and clear the codes.

Just so you know....