Hi, I'm Tony in the UK, and I have had my 1999 Explorer 4x4, 4008cc OHC V6, for 5 years now and clocked a total of 68,000 miles . I had it converted to LPG soon after I bought it, and apart from using Pads, Shoes and Filters (I do all my own servicing [less LPG bits]) its been utterly...