In Arizona, I wouldn't even worry about it.After reading many more threads in this forum regarding the dilution issue, I'm going to just run premium gas only(91 octane) and limit as many variables as possible. I will report back at 35000 miles from both labs again.
Countless UOAs on this engine that show significant fuel dilution also show minimal wear, yours included.
Try a synthetic 5w-30 to battle the dilution and sleep well at night. Your wear numbers at 5,300 miles are very low. A flash point of 370 (although low) is not horrible.
The difference between a 0w-20 and a 5w-30 at operating temp aren't huge and will offer you a little better protection.