Forum Discussion
Golden_HVAC
Feb 18, 2016Explorer
From what I have heard, if the coolant is full of minerals, then the minerals can collect at the inlet to the oil cooler and reduce flow to the exhaust gas cooler, it will overheat then crack, and then you can get coolant into the engine.
Chances are they installed all new coolant, and the block inside is still covered with the slime that caused the first oil cooler to reduce coolant flow.
Fix? It is only about $100 and was done to all the International class 6 and 7 trucks with the same engine in it. Install a coolant filter.
Napa # FIL4070 and a holder called FIL 4019.
I put one on my then new 1997 460" powered Bounder motorhome. At 1 year old, the coolant filter was so blocked that the heater would not work, and I replaced it, cut the old one open and found a sand like substance in it.
For my shuttle bus, I bought some tiny 3/8" ball valves, and installed it in the lines going back to the auxiliary heater box. It is a 2002 V10. This makes changing the filter much easier!
The heater hose is 5/8" ID and you can get the valves and barbed fittings at Home Depot or Lowes.
On my RV, I placed it where I could put a bucket under the filter and drain some fluid while changing the filter, but tried to keep fluid loss minimal with needle nose locking pliers and a rag on each heater hose line.
It has been reported that the first coolant filter on your model year truck will last for about 800 miles before being totally clogged with sludge. The second one about 1,200 miles and the third will last the remainder of 1 year. After that, buy the new filter every year or so, or when the heater stops working.
I actually like it when the coolant filter is clogged all summer, and the hot water is not circulating around my cool air from the A/C unit. You can use the shut off valves to restrict the flow in the summer, and your dash A/C will work much better.
Good luck,
Fred.
Chances are they installed all new coolant, and the block inside is still covered with the slime that caused the first oil cooler to reduce coolant flow.
Fix? It is only about $100 and was done to all the International class 6 and 7 trucks with the same engine in it. Install a coolant filter.
Napa # FIL4070 and a holder called FIL 4019.
I put one on my then new 1997 460" powered Bounder motorhome. At 1 year old, the coolant filter was so blocked that the heater would not work, and I replaced it, cut the old one open and found a sand like substance in it.
For my shuttle bus, I bought some tiny 3/8" ball valves, and installed it in the lines going back to the auxiliary heater box. It is a 2002 V10. This makes changing the filter much easier!
The heater hose is 5/8" ID and you can get the valves and barbed fittings at Home Depot or Lowes.
On my RV, I placed it where I could put a bucket under the filter and drain some fluid while changing the filter, but tried to keep fluid loss minimal with needle nose locking pliers and a rag on each heater hose line.
It has been reported that the first coolant filter on your model year truck will last for about 800 miles before being totally clogged with sludge. The second one about 1,200 miles and the third will last the remainder of 1 year. After that, buy the new filter every year or so, or when the heater stops working.
I actually like it when the coolant filter is clogged all summer, and the hot water is not circulating around my cool air from the A/C unit. You can use the shut off valves to restrict the flow in the summer, and your dash A/C will work much better.
Good luck,
Fred.
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