Question about feed grade molasses

[Stoutone]

Hello.. Bought 2 five gallon buckets last weekend from the feed store..
4.5 gallon of molasses with 10 gallons of boiling water and 25#'s
of inverted sugar. 24 gallon wash in total.

Is the oily/sludge floating on top normal?
It sticks to glass dawn dish just does get it off and leaves an oily feel on your hands.

I'm afraid of messing up my transfer pump and my boiler..

Thank you