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Old 05-02-2004, 09:52 PM   #11
Senior Member
Join Date: Aug 2002
Posts: 193


Transmissions come from the factory with 5 years/750,000 mile warranties if synthetic lube

is installed, and it's changed every 1/4 million miles.

This warranty applies to all HD OTR transmissions. Generally if transmission fliods are

changed as requiired, not run low on fluid, and not badly abused, they last beyond a million miles, sometimes way beyond that.

When considering the purchase of any used class 8, if there is any vibration anywhere, it's
best to continue searching. If there is doubt as to the conditon of engine, transmission or

differentials, the buyer can have the truck dynoed. A dyno generally reveals any engine or
driveline problems. To go a step fruther, one can have oil analysis done on engine, trans
and diff fluids.

The fluids can also be changed in advance of purchase. If any metal particles are in the

bottom of, in this case, the tranny, metal will come out, be visible in the oil watching it

drain with a flashlight shinning on the oil as it's draining. Metal will also be attached to

the magnetic drain plug. Anyway, it's good that you are pleased with the outcome. Sounds
like shes in ship shape now.

onezman is offline   Reply With Quote