[CMansfield]

Doug,
I am not sure what Loggy is, but if it refers to rough idle, gas vaporizing when you stop the engine and then start it a while while later it sputters when accelerating until you get fresh gas through the carb., and other general nastiness, I have the same problem. I have a 351 / 396 and had it back to the Olthoff's two weeks ago, they blamed the performance issues on winter gas. I bought some VP Red (106 octane) and mixed 2.5 gallons with about 15 of 93 and WOW what a diference, the car idles better, accelerates more smoothley (and seems faster) starts more easily after sitting, and just seems much happier. To me the difference in preformance is worth the cost.
Best, Chas