Power Service Diesel Fuel Supplement Anti-gel 12oz

Just what I use

I live in FL and used this for a trip to the northeast where the temps were going to be in the single digits. It's tough to know when then diesel from the station already has gel protection and this was inexpensive insurance to avoid an expensive and time consuming situation. My car is a Duramax Yukon and I had no issues. It is worth mentioning that on this particular car you still need to use the small funnel that came with the car despite the long neck of the bottle as there's a second flap in the fill neck - I made a mess the first time, but was drip free thereafter.