Taking the summer/weekend car out of storage, weather dependent, which means the F150 will be seeing some degree of decreased useage depending on the weather. I don't drive a HUGE ammount any more and my optional 36ga tank typically lasts 2 weeks of full time use. If I drive my Mustang 50% of the time that means 3-4 weeks between truck fill ups and maybe much longer if I drive the Mustang a lot. Any sense is using a fuel stabilizer (doesn't matter which one at this time; I have my favorite) for this application? I'm sure I don't *NEED* it but would it really offer any benefit? With a 36ga tank, thats not an inconsequential amount of stabilizer.