Thursday, January 19, 2012

Differential 456 Eaton on a Peterbilt 378?

Why does my differential feel slow and stuck and they don't go more than 60 MPHDifferential 456 Eaton on a Peterbilt 378?
Well that is a tough question... wwhen was the last time your brakes were checked? What rpms are you running at 60? Are you throwing black smoke more than normal? I need more info..



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