2002 subaru impreza 2.5rs, castrol hm 5w-30

[tweeker43]

first 2 uoa are mobil 1, pennzoil (various) in between, now trying castrol high mileage.

 

[Drew99GT]

Goodness, went from 66 Sus to 54 with that fuel dilution. Lots of short trips? Wear looks fantastic though.

 

[Al]

Yea, over 2% fuel dilution is usually the take action point. Didn't hurt wear any though. I would keep an eye on the sodium and potassium. Very low but Potassium has not shown up for you before.