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Old 05-05-2012, 07:42 PM   #1
Join Date: Nov 2011
Location: On the road when we can
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Checking coolant level - Cummins ISB 300 HP

Trying to check the coolant level in my engine, but there are no markings on the coolant reservoir. The visible coolant level is about an inch below the top of the reservoir. Should the reservoir be full?

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Old 05-05-2012, 07:48 PM   #2
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Location: Pensacola, FL
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Year, make and model of your rig?

If the resevoir has a pressure cap on it and is mounted above the level of the radiator, about 2/3 full when cold is ballpark. If you fill this type to the top, it will just spit it out as it warms up.

2008 Itasca Meridian 37H & 2015 Flagstaff T12RBST
2011 & 2012 Len & Pat's "One lap of America"
27K miles & 41 states in 13 months - Woo Woo
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Old 05-05-2012, 07:57 PM   #3
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'02 Tiffin Phaeton on Freightliner chassis with Cummins 300 HP engine.
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