Has the fluid ever been changed?
722.6 trans are no longer classified as "filled for life". They are to be changed once at 39k miles. Most folks here would continue to change periodically thereafter as well.
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Terry Allison
N. Calif. & Boca Chica, Panama
09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
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