Update.
Seriously considered having it towed home.
Educated guess/decision made to limp to Milesburg Cleveland Bros Caterpillar this morn.
Inspection of existing exhaust looked to not pose any significant fire risk.
Cycled my “manual” 12v remote air dump switch on and off every mile or so and dumped air by using brakes liberally. Low engine rpm indeed slowed my pressure build rate too.
Had my wife/spotter follow closely with her and my flashers on.
No issues.
Pretty legit looking big rig shop with huge bays and lots of security cams.
Signs posted say service Cummins and Cat.
Fingers crossed.
Having trouble posting a pic but will keep trying.
I think it identifies the problem.
Will keep you posted.
THANKS FOR ALL THE REPLIES.
ALL TAKEN VERY SERIOUSLY.
Todd the lurker
Ps. Not savvy enough to usually offer my own advice.
Pss Penn State won and we still had an awesome tailgating weekend.
