So to think it even further...the Marine 360 costs a little more than the regular 360. But if you look at the dosage, pink Stabil is 1 ounce\2.5 gal, 360 is 1 ounce\5 gal, and marine is 1 ounce\10 gal. So it probably ends up being the most cost effective, assuming you don't over-dose. (Which I probably end up doing with Seafoam and some others that I just pour in without measuring, but Stabil has the measuring cup built in, so less waste.)...
For those of us that have decided some sort of protection, am I (are we) over-thinking this?