Need advice! Volvo truck draining my money one gallon at a time!!!

What year is the truck, how many miles?

 

Don't know about coolant,but for fan staying on,i had same problem on my freightliner and it was ac high pressure switch that was bad,cost 40$,probably more for volvo

 

it is not all) get ready change EGR cooler and sleeper heater core.... dont ask me why.... LOL

 

if you had a leaking heater core,it is mounted above blower motor,it leaked into motor and damaged it (the burnt electrical smell)radiator was probably never leaking,leaking coolant surge tank (again mounted above)made it look like radiator leak,common mistake when you don't test with a pressure tester and just eyeball it.

 

add pressure limiting valve in heater lines. It is stock thing on trucks with volvo engine, but not with cummins. when you rev engine faster 1800 rpm pressure in heater core is about 3-4 BAR. that's why they leak

 

If you're taking the truck to the same place over and over I bet you there raping your pocket and I would try another place because this place is killing you now this is if it's the same place you're going to over and over and over now if it's different people every time it maybe you're getting bad luck and every places effing you over or you just got a really bad luck truck and I would dump it or smash it into a guardrail and total that s*** collected the insurance and get another truck

 

I'm pretty sure he/ she got it figured out 5 years ago.