Re: 4R100 Transmission fluid analysis - 2000 Excursion
Trying to be proactive and make sure that the Excursion is reliable for long trips and 400 hp. Only negative seat of the pants feeling was the long mushy shift into OD
. Need to be able to make long road trips into western South Dakota. Once you pass the Mitchel, SD
heading west it's a good 3-4 hours of open road.
Jerry from J&M transmissions showed me the disassembled tranny today.
Center support bearing needs to be replaced.
the thrust washers and clutches were all worn and needed to be replaced.
He showed me how some of the parts had worn down to the copper and this is what the oil analysis showed.
The pump still looked good.
The fluid was run too long as shown by the high oxidation numbers.
Overall he thought the tranny held up pretty good for 191K miles and most of the parts that needed to be replaced was from wear and tear. But we caught the center support bearing before it caused and damage.
2003 F250, Wildman tunes, Faubion trns, Swamps 175/146 SS,van turbo/WW, DI Intercooler, oilguard bypass, intank & pre-pump, reg return, Firestone air bags, Bilsteins, 350 HP/692 TQ
2000 Excursion- Pwrd by: T Wildman 6 pos chip, CT Performance Suspension, Riffraff Diesel Performance, J&M Tranny, 4" MBRP, 6637 filter, intank/prepump mods