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post #11 of (permalink) Old 07-31-2010, 07:46 PM
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Hey Mark and Smokey, what is the advantage to switching to Mercon V instead of Mercon III? My truck has 185,000+ on the original tranny and really don't want to cause any problems as it shifts the same as it did when new. I change the fluid, internal filter, and the spin-on filter in the cooler return line every 30,000 miles and the pan is always very clean. I have a converter drain plug and have been using Napa filters and Valvoline fluid at every service. As always, thanks in advance!

Y2K+1 F250 SC LB 4X4 Lariat Bob Riley 203 thermostat and housing, FL1A trans inline filter, Superchip tuner @ 60HP, CCV, Heater valve mod, Bob Riley H/X hose. pre-pump and harpoon. napa 3121 primary fuel filter. access rollup bed cover. spare cps in glovebox. diesel innovations regulated return kit. summit 4" exhaust. previous trucks:
1973 f-350 4x2 360 4 speed.
1979 f-150 300 3 on the tree.
1987 ranger s/c 4x2 2.9 auto 203,000 trouble free miles.
1988 f150 lariat 4x4 300 4 speed
1997 exploder exploded and retired...
2004 freestar van
member IATN
ASE master heavy truck since '93
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