beertestr
Club Member
Hmm, my 6L90 is at 150k...I ask because the 6sp transmissions in those usually fail before that mileage.
Some simple steps can help extend the life of those..... Regular fluid & filter changes/ HP Tune for the transmission/ On some models they have a thermal block to loop the transmission cooler lines that does not open till 190ish degrees...
They sell some easy to install bypass kits that keeps the operating temps lower and extends life.
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