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Old 11-24-2019, 06:12 PM
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Join Date: Mar 2019
Location: Oregon
Posts: 32
1983 300td cooling system

Hello group,
I finally attempted to start my 83 wagon after an engine swap, and a trans rebuild. I attempted to pour coolant in it. It would not take much. I ended up taking the upper radiator hose off the radiator and pouring coolant in the block. I installed: new radiator, new water pump, new thermostat, all new coolant-heater hoses. When I squeeze upper and lower radiator hoses, I can see fluctuation in the expansion tank. When I remove the hose from the radiator to the expansion tank (upper) I have very slight drips out it, I get a little more flow with rpms. I’m not running hot, Is this normal? I know on newer cars you can see flow from the water pump in the res from this hose. Any suggestions or ideas? Thought about a spill free funnel. I now have close to (3) gallons of coolant in the vehicle.

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Old 11-24-2019, 06:20 PM
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ROLLGUY
 
Join Date: Oct 2007
Posts: 7,230
That all sounds normal to me. Filling from the upper radiator hose is the only way to get coolant into these engines. I learned that the hard way. If you have close to 3 gallons in the system, that is about all it will take. It should be fine.
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Old 11-24-2019, 07:24 PM
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Join Date: Mar 2019
Location: Oregon
Posts: 32
Thank you for the reply. Just thought it strange it was difficult to fill up.Its also hard to tell if it’s circulating.

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