Excerpt: We’ve long suspected that water moisture in fuel lines can sabotage performance, so testing Heet Iso-HEET against a hairdryer removal method was overdue. The vibrant red 12-ounce bottle promised more than just drying, boasting Year Round Performance, Engine Cleaning, and Efficiency Boosts. Applying Heet to a damp fuel line was surprisingly effortless—it worked instantly, dissolving water without triggering suction or damage we feared from heat or compression. While a hairdryer seemed quick, our tests revealed the precision of Heet’s antifreeze formula contrasted sharply with the uniform drying method. The results were clear: We achieved immediate clarity in the fuel line, and our mileage metrics climbed steadily. Ultimately, Heet outperformed the conventional tool, proving its worth beyond just drying. The vibrant color didn’t hurt either—it’s hard to mistake premium performance when the bottle calls attention to itself.