Or it could be the EGR cooler. Have had several that start out with a slow drop in the reservoir over a couple days, by the time it got fixed it was eating a gallon or more a day. If it is an EGR cooler, it ends up clogging the DPF because coolant doesn't burn off when it hits the DPF mesh like soot does during a regen, it just gums it up.
Coolant depleted without any visible leaks
Discussion in 'Questions From New Drivers' started by DAX_, Jul 15, 2021.
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77fib77, Dave_in_AZ, slow.rider and 3 others Thank this.
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nikmirbre, Stray_Dog, snowfarmer350 and 2 others Thank this.
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Also I hear that silicone hose will loose coolant without leaking as well. Some home the water evaporates through it.
Dave_in_AZ and Rideandrepair Thank this. -
Check trans if you have a water to oil cooler. Not the first time its happened.
Dave_in_AZ and Rideandrepair Thank this. -
I agree with EGR cooler. Cummins are notorious for it.
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make them pay breakdown pay while sitting in motel.
I wouldn’t buy coolant for their truck without reimbursement.
You’re throwing money out the window.slow.rider Thanks this. -
Sounds like you're burning it to me if you can't find a leak. Does your exhaust have white streaks coming down from the tip? Do you get white smoke when you first start it up when the motor is cold and then it stops after it warms up?
Down South Trans, slow.rider and Rideandrepair Thank this. -
Paying for the coolant out of pocket was my choice. I don't doubt that they would have reimbursed me for all of it, but I had my reasons for not submitting all coolant expenses.
What you call throwing money out the window, I call making a very profitable investment in maximizing my income.slow.rider Thanks this. -
I know the DPF was removed and cleaned at least twice between 500k and 600k. You would think with the hundreds of Cummins powered trucks in the fleet the shop would be aware of that weakness but who knows.Rideandrepair Thanks this. -
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