00:23 20-04-2026

Debunking the myth of using gasoline to clean diesel injectors

An old driver's myth about using a small amount of gasoline to clean diesel injectors has been definitively debunked by experts.

Specialists from RACE confirm that this method was indeed used, but only on older vehicles. For diesels manufactured before 2010, adding a minimal amount of gasoline—no more than 1–2% of the fuel volume—is acceptable. This is due to the design of older injection systems, which were less sensitive to fuel composition.

However, for modern cars, this hack can lead to serious damage. Gasoline reduces lubrication in the fuel system, causing harm to the high-pressure pump and injectors. Even a small mistake could cost the owner thousands of euros.

Experts emphasize that using unsuitable fuel results in engine misfires, power loss, and accelerated wear of components. Instead of questionable methods, they recommend using special additives or refueling with high-quality diesel that contains cleaning agents.

This case serves as a good example of how outdated advice can harm modern vehicles. Technology has advanced, and methods that worked in the past are not just ineffective today but downright dangerous.