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evaporation through a small leak





Although this could be very possible, I would also check the engine oil for signs of milkiness. If your oil looks somewhat like coffee with creamer in it ....... then it is very likely that your intake manifold gasket let loose and the coolant is mixing with the oil. If this is the case and you are not already to late, stop driving the van immediately ! The coolant in the oil will not only reduce the oils ability to lubricate the engine hence more friction and allot more heat but,, the combination of the coolant in the oil creates an acid that will eat at the surfaces of your engine.

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Q: What causes Coolant going low without visual leakage?
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