What effect will the above have on conrod, piston or exhaust valve failure?
Although the equipment produces improved torque, the level of increase is constantly governed, monitored and concentrated within the mid-range. However, what the gas also does is reduce the amount of diesel fuel, which reduction could have repercussions in older engines not fitted with toughened valves. Whereas conrods, pistons and gudgeon pins are lubricated via the oil in the sump, the valves rely solely upon sulphur contained within the diesel for lubrication.In order to reduce emissions, the sulphur content of modern diesel has been significantly reduced and, to obviate valve seat recession, toughened valves are now fitted as standard to the modern diesel engine.The toughened valve also copes perfectly with the further reduction in sulphur occasioned by the introduction of gas. Following c.450,000 miles post DieselMist Conversion, a MAN HGV had the cylinder-head removed for inspection, revealing no damage whatsoever and no measurable wear on the valves or bores.
