I have only ever used Howes and Power Service due to easy local availability. Seems like Power Service does a better job at preventing gelling than Howes does. I had no issues during our cold snap last week with wind chills close to 30 below; I did double up on the amount of Power Service I normally would have used. I know of at least one pickup and one tractor that gelled up using their "normal" amount of additive.
I would like to give the Stanadyne treatment a try.
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter