I asked Terry about it, and he made some calls. There's a TSB about discontinuing XL-7 use in F-series.

Quote:

Its a TSB on Ford F series,Explorers etc. re. rear end lube. Stock lube with XL-7 is repalced with new lube '75W90 QFEHP without XL-7. Other rear ends that use 75W140 still take XL-3 FM. On the F-series etc. with the new lube the clutch packs in the diff must also be changed and the Ring and pinions checked/replaced....Can still get XL-3 but no XL-7......



FWIW, the AllData database only calls for ATF3 in the MTX-75.

Last edited by Jeb Hoge; 09/14/05 06:45 PM.
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