2009 Harley Superglide with 27,000 miles. The primary oil is due for a change, and I'm wondering if the T5 would be a good choice. The previous owner used the Harley Syn3 20w50 oil in the primary. It shifts great and never a problem finding neutral. I have no other reason to switch to the T5 other than having a gallon of T5 in the garage that I use for my OPE, and the primary capacity is only 1 qt.