I'm about to buy a Chevy Silverado with 135K or son on the odo. Its a dual fuel aftermarket conversion, has been driven with CNG from it was new and looks like a great deal. I was just wondering about the condition of the engine after its been run for so long on natural gas. I've heard some people comment that these engines last forever however I have also seen references to engines requiring hardened valve seats (cobalt or otherwise) to compensate for the dry properties of natural gas.
In general does anyone have advice here and do the conversions last or is a head job pending?
In general does anyone have advice here and do the conversions last or is a head job pending?
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