Here's my question. I'll be doing an oil change coming up and will be switching to a PC Racing reuseable oil filter, similar to the K&P Engineering filter. I'll also be using the left over new bottles of oil I have accumulated over time. It'll be a mix of 1.5 qts NAPA 15w-50 full syn, 1 qt Honda 20w-50 dino and 1 qt Valvoline 50w VR1. Just fine for my 09 H-D but still a mix. Would it pay to get a UOA with this mix? I really like to see how the filter works? ....