Occasionally Im tempted to put a small grade in the NC-13 because I can't load my splits in N/S which is more conducive to air flow thru the splits.
I also know the manuals don't recommend it.
Would it be *bad* to do it ? or does the manufacturer just believe it is of no real benefit ?
I also know the manuals don't recommend it.
Would it be *bad* to do it ? or does the manufacturer just believe it is of no real benefit ?