Do diesel cleaners / injector cleaners work?
by FTE Published on Monday, February 2nd, 2026
I have spent 15 years formulating and testing fuel cleaning chemistry.
Numerous studies and tests show that diesel cleaners with premium amine-based detergents can restore lost engine power and improve fuel economy in engines that have deteriorated due to deposit buildup.
However, cheap products with minimal active ingredients are largely ineffective, creating mixed consumer opinions and skepticism.
Choose proven products with amine and polyether-amine detergents and higher percentage active ingredients.
Look for brands that have undergone standardized testing. Premium cleaners cost £20 or more but can help prevent expensive injector replacement while maintaining optimal performance.
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