I need some advice with the newest one, Moby, a real white whale (K96 frame so it sits really high in back.) 150K miles - 2001 3/4T 4wd. Leaks oil from engine maybe oil cooler lines? There is oil on line at radiator and drips near rear of engine. Do rear mains still leak? Stopped suddenly on rounding a corner (a busy one of course) Would restart, run stumble a few seconds, die. Gauge shows maybe 1/8 tank. Went 300 miles before and have gone 200 since. Water in fuel?? Segmented fuel tank??