High sodium in oil

[sbtrucking]

Engine cm2250

The truck has not lost colant at all,
When we flushed the engine after the ceramic plungers broke i decided to change the oil cooler, for some reason the oil cooler gasket didnt seal properly and on the first start up had oil in the colant and coolant in the oil, We did change the oil twice and installed a new maintenance free breather filter.
So I am guessing that why there is still some coolant in the sample, i will test it again next oil change Godwilling