2004 differential goes out
I had a differential Failure at 90,000 miles on a 2004 Tiffin Phaeton Freightliner X Chassis Oil was changed at 50,000 with synthetic oil. Left carrier bearing completely failed and came apart. Di...
Forum Discussion
"Oil was changed at 50,000 with synthetic oil"
Is/was the synthetic oil specifically approved by brand name and weight, by Mercedes?
Quicksilver, has a Fuller 10/5/13 Transmission, auxiliary, and OD.
If ANYTHING other than fifty weight mineral oil is used, the transmission and auxiliary will fail. Not a mere chance of failing - a 100% guaranteed burnout. Even super-magic 101% ultra synthetic lubricants will fail this powertrain device. I am not aware of any Fuller approved alternative for 50 weight mineral oil. I learned how to, and rebuilt several of these turkeys including my own and for a fact the needle bearings of the twin countershafts will seize. Fuller countershafts are so sensitive they have to be "timed" to each other.
Is/was the synthetic oil specifically approved by brand name and weight, by Mercedes?
Quicksilver, has a Fuller 10/5/13 Transmission, auxiliary, and OD.
If ANYTHING other than fifty weight mineral oil is used, the transmission and auxiliary will fail. Not a mere chance of failing - a 100% guaranteed burnout. Even super-magic 101% ultra synthetic lubricants will fail this powertrain device. I am not aware of any Fuller approved alternative for 50 weight mineral oil. I learned how to, and rebuilt several of these turkeys including my own and for a fact the needle bearings of the twin countershafts will seize. Fuller countershafts are so sensitive they have to be "timed" to each other.
