Which model do you have?

Both höfats bioethanol fuels are intended for product-specific use. This means that the SPIN 90 | 120 can only be filled with the gel fuel (black cap). The new SPIN X 900 | 1200, SPIN air 900 | 1200 and SPIN 900 | 1200 | 1500 and all SPINs retrofitted with the new Bio-Burner 900 | 1200 can only be filled with the liquid fuel (green cap).

Under no circumstances should you fill the new Bio-Burner with the previous höfats bioethanol gel fuel, as this can cause damage.