Engine blow

A NUMBER of companies offer gas-on-diesel systems for vehicles like your Navara. They're not dual-fuel systems as used on petrol engines, rather a substitution system that adds some LPG to the mix of air and diesel going into the engine. The LPG boosts performance and the theory is the driver then backs off the throttle and gets better fuel economy as a result of lower throttle openings. Do your homework as I have had reports of engines blowing up.