Super Duty & Heavy Duty1999 to current Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
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2000, F250 PSD, 145,000 miles, all but 11 miles are mine...... Mods: 6637, 4" ss Magnaflow, Bilstien shocks, ISSPRO gauges, Foil Delete, '08 Diff cover, DP Tuner, 60t, 80e, 140ag, Lincoln Style front grill
Mercon 5 is an ATF so any ATF that is Mercon compatible/comparable is good. I replaced mine with Royal Purple since I had plenty on hand.
Originally Ford said that you could not use Mercon V in Mercon recommended systems. Since Mercon is no longer being produced, only Mercon V rated ATF, Ford has since issued a bulletin stating the Mercon V is compatible to Mercon and can be used instead of Mercon.
2003 F-250 PSD 7.3 Lariat FX4 CC/SB, 4R100, 3.73LS, Dual Alternators, 250K+ Miles
Installed: PHP Phoenix (6-Pos Chip), In-Tank and Harpoon Mod, SS HPX, FTVB, 6637, XRF Ball Joints
Waiting in the Garage: MBRP exhaust, ISSPRO EV2 gauges, EBPV delete pedestal, 6.0 Intercooler, 6.0 Trans Cooler (26 row)
I called my buddy at Ford parts dealership......Mercon 5 for the 08's transfer cases, holds about 3.5 qts better get 4 qts.
A notation on the back of the Motorcraft Mercon V bottles says "Do not use in transfer cases". My 03 manual says to use Mercon ATF which is not longer made.
03 F350 6.0 DRW CC 4x4 Lariet White/Arizona Beige FX4 Moonroof 6 CD 4.10 L/S 71,000 miles
04 Ranger Edge 3.0 V6 White 54,000 miles
06 Milan V6 Vivid Red Moonroof Leather 114,000 miles
01 Escape V6 Yellow Moonroof 150,000 miles
I would not use Motorcraft Mercon V in my transfer case, because the bottle specifically says not to. Does anyone think they were joking?
When Ford obsoleted the Mercon, and interchanged Mercon V, evidently they had a problem because Mercon V was not suitable for transfer cases. That is when they released a product specifically called Transfer Case Fluid. I don't believe they came up with a new product SKU just for the heck of it. There had to be a good reason why their Mercon V was not to be used in TC.
I would skip the Motorcraft product altogether. I used Mobil 1 synthetic ATF in my TC and it has been perfect for a long time. Buy 3 quarts. You might need only 2, but many take a bit more. Return the 3rd one if you don't need it. Or save it for the day when you flush your power steering system. It works great for that too.
Folks call me Bill. Why, yes, it is a 6 liter. Your jealousy is showing.
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