Check 2024 Peterbilt Transmission Fluid 579. Regularly check transmission fluid levels and replace the transmission filter and fluid according to the manufacturer's guidelines. If you have this issue addressed sooner than later, then you can easily get it fixed and have the fluid topped up.
View and download peterbilt 579 2012 instruction manual online. But mine was leaking from one of the 3/8 heater hose that supplies coolant to the def dose.
