HI CARPROS, DO COMPRESSED NATURAL GAS (CNG) AS A FUEL REDUCES ENGINE LIFE?

  • Tiny
  • fahdaslam
  • 2007 Toyota Corolla
  • 70,000 miles

Manufacturer that are selling CNG fitted vehicles claim that CNG as a fuels increases engine life, while mechanics claim that CNG reduces engine life and its effect is most prominent at engine head. I want to knw wt carpros say abt it.

Thursday, June 14th, 2012 AT 7:14 PM

3 Answers

  • Tiny
  • mhpautos
  • Expert
  • 30,495 posts

These day no, it won't as a rule, modern engines are built for non leaded fuels they use harder seats and valves, LPG or CNG as you call it over there, is dry which on older leaded engines tended to hammer valves, you can opt to use an upper cylinder lube additive to the petrol as well this will not hurt at all.

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Thursday, June 14th, 2012 AT 10:47 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

Try not to use CNG 100 %. Spare some time for gasoline in order to lube the valve seats.

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Friday, June 15th, 2012 AT 3:19 PM
  • Tiny
  • fahdaslam
  • Member

Thanx pros, yes in morning I let my car idle on gasoline then I shift it to CNG. Thanx for ur time

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Monday, June 18th, 2012 AT 7:50 AM

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