[Tim Hancock]

Originally Posted by HardDrive

I've never used stabil. Are there any potential downsides to it?

I never used to use it, but I did add some to some vehicles last year. I cannot truly say whether it works to prevent varnish with the new problematic fuels as I ran alll the vehicles several times which in theory would have circulated/stirred the fuel enough in the carbs to minimize varnish accumulation.

I simply cannot say whether the "old Stabil" which definitely helped keep older formulations of gas "fresh" will stop the new formulation from developing deposits in carbs. I am not willing to experiment anymore as tearing a bunch of carbs down every season just is not cutting it for me anymore. For now I will simply stick with doing the Avgas swap.