I searched the forums and it seems to come down to these 2 products (mostly) and I have always been a big fan of Seafoam. I have not used it yet in my Viper b/c I read a post where someone said Seafoam is so powerful it can knock stuff loose in the gas tank (I guess if there is any) and clog the filter which I hear is a PIA to change without breaking lines etc. After changing the fluids when I first got it I planned on running Seafoam through it but have been a little spooked to do so after reading the post. In leiu of using Seafoam I've been just driving it a bunch and runing Shell 93 that has the V-power additive. After doing this for the last couple months you think it would be ok to go ahead and run the Seafoam? Just thought it is a good idea to periodically run some good stuff along with an oil change, plus Seafoam is a stabilizer as well which is nice to have this time a year, but I still drive it on a nice day no matter what the temperature so I haven't worried to much about it.