Mixing brands of oil and weights - Subaru Outback

rykertest · 06-03-2011, 07:03 PM

Is it a big deal to mix brands of oil and weights?

I ask because I have quite a few partial quarts of oil that I would like to get rid of. It is all Full Synthetic, and a mix of 75% Mobil 1 and 25% Valvoline. It is all 5W-30 except for 1.5 quarts of 5W-0. I have 2 oil changes to do in the Subaru and the Honda I have enough quarts to do both oil changes, but if the 1.5 qts of 0 says it offers the same protection as 5-30, can I use that up?

Odd situation but I'm getting sick of all these partial quarts of oil. With every vehicle using somewhere between 4 and 5 quarts of oil, I'm always left with a little bit and it's just pissing me off this evening.

Thanks.

PS: If it matters, I have almost 90,000 miles on the car. 2.5 auto.

**AWDFTW** · 06-03-2011, 07:48 PM

1.5 quarts of what? 5w0 does not exist. 5w20, 0w20? And yes, you can make a blend with little effect.

TooSlick · 06-06-2011, 06:30 PM

No problem mixing 0w-30 and 5w-30 from different manufacturers. One reason for having API Specs is that the products are compatible. Fleets that select lowest bidder lube contracts change oil brands regularly.

TS

06-03-2011, 07:03 PM	#1 (permalink)
rykertest Registered User Join Date: Feb 2010 Location: usa Car: 2008 outback, 2.5I Posts: 63 Feedback Score: 0 reviews	Mixing brands of oil and weights Is it a big deal to mix brands of oil and weights? I ask because I have quite a few partial quarts of oil that I would like to get rid of. It is all Full Synthetic, and a mix of 75% Mobil 1 and 25% Valvoline. It is all 5W-30 except for 1.5 quarts of 5W-0. I have 2 oil changes to do in the Subaru and the Honda I have enough quarts to do both oil changes, but if the 1.5 qts of 0 says it offers the same protection as 5-30, can I use that up? Odd situation but I'm getting sick of all these partial quarts of oil. With every vehicle using somewhere between 4 and 5 quarts of oil, I'm always left with a little bit and it's just pissing me off this evening. Thanks. PS: If it matters, I have almost 90,000 miles on the car. 2.5 auto.

06-03-2011, 07:48 PM	#2 (permalink)
AWDFTW Super Moderator Join Date: May 2007 Location: Displaced to Chicago. Car: 2003 2.5 4EAT with AWP. Posts: 6,084 Feedback Score: 0 reviews	1.5 quarts of what? 5w0 does not exist. 5w20, 0w20? And yes, you can make a blend with little effect. __________________ 2003 Outback: "Kaylee". 128,000 and counting. Mods: GE Nighthawk low beams, HIR1 9011 high beam upgrade, Nokya 25k yellow fog lights, Fumoto valve, 04 Forester XT shift knob. Basics: G-Oil Bio-based Advanced Full Synthetic 5w30, Purolater oil filter, STP air filter, Valvoline Maxlife Dex/Merc ATF, Valvoline Durablend 80w90, Michelin Primacy MXV4. Also: More rust and parking lot scars than I care to think about.

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06-06-2011, 06:30 PM	#3 (permalink)
TooSlick Registered User Join Date: Aug 2010 Car: 2006 Outback/ non-turbo, auto Posts: 281 Feedback Score: 0 reviews	No problem mixing 0w-30 and 5w-30 from different manufacturers. One reason for having API Specs is that the products are compatible. Fleets that select lowest bidder lube contracts change oil brands regularly. TS

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