This almost sounds too good to be true, if not for ALL of the good reviews this stuff gets.
Alright so I am due for an oil change with my spring tune-up. This question has been asked, but no really definitive answer has been given. The Amsoil synthetic I use is 40$ for a full oil change, so I don't exactly feel like just dumping an extra 40$ down the drain to clean up the mess the seafoam will have dislodged. Can I just poor a quart or 2 of el-cheapo oil into the crankcase and let it drip out with the deposits, and then add the (synthtic) Amsoil when it's done dripping out of the engine? I know you aren't supposed to go back to regular oil when you have switched to synthetic, but would it be a problem if you never turn on the engine?
I'm sure a lot of people would appreciate a thorough answer to this question...