Many worry CNG harms engines via high temps, carbon buildup, or shorter lifespan—but the reality is nuanced.
First, temperatures: CNG burns hotter than gasoline, but proper conversion kits (with cooled exhaust gas recirculation) keep temps in check. Without a quality kit, overheating risks rise, so certified installs are key.
Next, carbon buildup: CNG’s clean burn reduces carbon deposits on valves and pistons—unlike gasoline, which leaves more residue. This cuts wear, actually lowering maintenance needs long-term.
As for engine lifespan: When correctly converted and maintained (e.g., regular spark plug and filter changes), CNG often extends lifespan. The cleaner combustion lessens engine stress.
But poor conversions (e.g., mismatched parts) or neglect can shorten life.
In short, CNG doesn’t ruin engines if you use a certified kit and stick to maintenance(Example:SCYUNCHENG CNG LPG). Skip shortcuts, and it may even be gentler on your engine than gasoline.