What are fuel stabilizers and which is the best one?


Pro Tuner
Staff member
2002 Clio 172
What are fuel stabilizers, what would you say is the best one?

Does everyone benefit from a fuel stabilizer?
Fuel stabilizers are useful when storing a car as fuel will deteriorate or evaporate.

When fuel has been sat in a tank for a while it will gum up the internals of your fuel system and engine as fuel deteriorates into a gum and varnish if left over time.

They offer no advantages in a daily driven car or one that is regularly used so I wouldn't recommend using one.
Fuel stabilize is a solution that provides a protective layer for the fuel sitting in a gas tank. It prevents fuel from forming sticky resins that can quickly ruin a carburetor. In my experience, STA-BIL 22214 Fuel Stabilizer is the best.

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