two ?'s milky oil / battery meter not working

philcore3

20+ Year Stangneter :roc</strong><span class=
Aug 20, 2004
43
4
8
I installed an aftermarket intake and after I got everything running, the oil was a milky color. I would assume some coolant got in the oil. I changed out the oil as recommended and as for now the oil is normal. The coolant doesn't show any signs of mixing with oil. Was this a one time thing that usually happens with intake swaps. What should I look for, just keep checking my oil? Would that milky oil have hurt my engine in any way? I only ran it for about 10 minutes before changing it.

question 2 My factory battery gauge does not read a charge. What wiring problems should I seek out to remedy this? thanks.