"drove it for 5 minutes came back took cap off coolant a tad low"

If you had the engine up to temperature, you should not have been able to take the cap off without blowing coolant all over the place. I would recommend you perform a cooling system pressure check since it sounds like you have a potential coolant loss somewhere else.

2002 X5 3.0 317,000 miles
2014 428i 24,900 miles

2004 325i sold at 123,600 miles
2001 325i sold at 66,000 miles

1970 Firebird - Under restoration