What is the effect of CNG on engine longevity?

Answer: C — CNG generally leads to longer engine life

Using Compressed Natural Gas (CNG) as a fuel can generally lead to longer engine life. This is primarily because CNG burns cleaner than traditional gasoline or diesel, resulting in fewer carbon deposits and contaminants within the engine. Cleaner combustion produces less soot and harmful emissions, which can degrade engine components over time. Moreover, CNG has a higher octane rating, which helps in reducing engine knocking, thus promoting smoother operation and decreased stress on engine parts. Additionally, the oils used in CNG engines often contain fewer additives that can create sludge, further contributing to engine longevity. With reduced wear and tear and cleaner operation, engines that utilize CNG can see improved reliability and an overall extended lifespan compared to those that run on other fossil fuels.