Berryman B-12 Chemtool isn't only for the piston soak procedure.
What it does in the tank
💉
Cleans injectorsRemoves deposits from fuel injectors.
🔧
Cleans carburetorsDissolves varnish in jets and passages.
💧
Removes waterAbsorbs moisture from the fuel.
🔥
Cleans combustionHelps clear intake valve deposits.
How much B-12 to add — dosage
The classic guidance for Berryman B-12 Chemtool.
| Goal | Dose | How often |
|---|---|---|
| Routine maintenance | ½ can per full tank | Every few thousand km |
| Deep clean | 1 full can per ~60 L | A few tanks in a row |
| Winter water | ½–1 can | Every couple of fill-ups |
✅ Best practice.
Step by step
- Run the tank down.
- Fill the tank with gasoline.
- Drive normally.
- For a heavily gummed-up system, repeat.
How often should you use it?
As maintenance, a treatment every few thousand kilometres.
ℹ️ Gasoline engines.
⚠️ Handle with care.
Frequently asked questions
Can I use too much B-12 in the tank?
Staying near the recommended ratio is best.
Will it hurt my oxygen sensor or catalytic converter?
Used at the recommended dose it's compatible.
Does it work on motorcycles, mowers and boats?
Yes, for gasoline engines.
What's the difference between the tank treatment and the piston soak?
Same product, two uses.
