Should I put antifreeze in my gas tank when it's very freezing weather and, if so, how much?

Question

I've heard that when it is very cold your car will operate better if you add some antifreeze when you fill up your tank. Is that true and how much do you add?

Answer 1

What you are thinking of is gas line anti freeze, which is just ethanol. Depending on the area where you live, the gas you buy may have up to 10% ethanol in it already. It will be noted on a sticker on the pump.

Unless you are in an area where it gets very cold for long stretches of time, or if you are in the habit of leaving the car with a nearly empty fuel tank, you will not need to add it!!

Do not add regular antifreeze to your gas tank!!!!!!

Answer 2

Gas Antifreeze

Answer 3

No not regular anti-freeze. There is a product called "HEET" that is made for gas tanks in cold weather. Just add a can with each fill up in the winter and it keeps the natural condensation from collecting in the tank and freezing up. I have done this for years specially when I lived in Alaska and it always works but please don't use regular antifreeze...wrong product for a gas tank.

Answer 4

Never put antifreeze in your gas tank...... very bad. Gasoline doesn't freeze until way, way , way below zero. If you have water in the gas tank that will be what freezes. If you think that is what you are concerned about then they make a "Gas line Antifreeze" to take the water out of the system.

Answer 5

Theres no need to put antifreeze in your gas tank. Gasoline has way too low of a freezing point to cause any probles. Diesel on the other hand will start to turn into a jelly at about 15 degrees farenhiet. With that all you need is some diesel anit-gel or cetane booster.

Answer 6

Never put antifreeze in your gas tank. Put a 50/50 mix in your radiator reservior and change it every 60,000 miles.

Only use Heet line dryer in a gas tank, but you can avoid most of those treatments by keeping your tank filled which will keep the condensation out of your tank in the first place.
Also run lucas or gumout injector cleaner and top end lubricant in your gas tank once a month to keep the engine running smooth and less problems will occure as a result.

Answer 7

There is a product available at Canadian Tire called " STP Gas line antifrezze". It's a small red bottle that'll run you about $4.50
If you feel the need to use some sort of antifrezze in your tank, this is the best for cold tempretures. You do not need to do so because of the chemical structure of gas, but if you do use the gas line antifrezze, you'll only need to add half a bottle every 2-3 tankfuls.

Answer 8

Not "antifreeze". "Dry Gas" was added in the old days, but is not needed now in my opinion because the modern gasoline fuel already has the ability to soak up any extra water in the fuel. However, the article below recommends using dry gas under some conditions.

Answer 9

The average petrol has a freezing point of -60 oC so i wouldn.t worry, also never put antifreeze in your fuel tank.

Answer 10

This comes from Northern Canada :P

Everytime I fill up, I put a bottle of gasline antifreeze in my fuel tank. Its appr 1.50 a bottle [they are quite small]. This prevents condensation in your fuel tank and ice crystals!

Its -24 here right now [-14F] and they have cases of the stuff near the till! :)