Q: How much oil do I put on the pad when using the re-fill?
A: Half the bottle if it’s a dry pad. If the pad is already lightly oiled do not over saturate, just enough so if you press on it with your finger you see a light oil residue on it.
Q: Is String Fuel prone to Darken pale fretboards?
A: It does clean and condition them and it is an oil so it can darken them some with no harm as it will evaporate over time. For the best way to clean and condition the fretboard we recommend our F-ONE Oil.
Q: Would you recommend using this product before & after playing your instrument?
A: You can use both times; before to have a smoother feel on the strings and minimize string squeaking then after to clean off finger oils and dirt to help stings last longer.
Q: Can you use this on tapewound strings?
A: Yes.
Q: Would this be good to use on coated strings?
A: Yes, still cleans and lubricates. Can also help the coating last longer.
Q: Can i use this for violins strings?
A: Yes, it will also clean rosin off.
Q: Does this change the tone of a set of strings, kind of like a coating would change it?
A: It will not change the tone on new or worn strings except improve tone and the strings will sound newer, while helping with sustain and response time.
Below is a list of ingredients in this product that we are required to disclose in compliance with all USA State and Federal regulations:
| Ingredient | Function | Explanation |
| C12-14 Isoparafin | Solvent/Cleaner | Solubilizes or dissolves at least one other substance to form a solution. |
| DMDM hydantoin | Preservative | Makes the environment less favorable to the microorganisms. |
| Mono(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione | Preservative | Makes the environment less favorable to the microorganisms. |
| Eugenol | Fragrance | A naturally occurring component of fragrance oil. |
| C.I. Acid Violet 48 | Dye | To impart a color. |