Originally Posted By: Nyogtha
Originally Posted By: KennyJB
I think I've just been overthinking it then, thinking I need exactly the 5.5 qts and of the same brand and blend.
I have a 04 H6 Outback. It has 130k miles on it but doesn't consume any. I run 10w30 in it during the summer and 5w30 in the winter.
Unless you're getting some big discount on 10W-30 relative to 5W-30, why not run 5W-30 (or even 0W-30) year round? That would eliminate half the issue.
There should be some individual quarts of 5W-30 and 0W-30 left at the AZ clearance sales as others have mentioned. I haven't seen any 10W-30 on clearance at the AZ's I've visited the past few weeks.
There is always more 10w-30 to choose from and my manual recommends it for the warmer temps, and yeah is usually cheaper. I just switch to 5 in winter because it can get below 0
I don't try to squeeze out huge OCIs though, 4k is about it. I do too much stop and go trips where the car never warms up. Plus with the weather extremes (gets above 100 in summer and super dusty). I know it's probably a waste of oil but that's why I get the cheap stuff, and because I don't drive a lot, I probably do two changes a year even at that interval.
I was also trying to keep Qs Defy going for three OCs so I could do a UOA and then maybe I'll stretch the OCI if things look good.