Mixing Oil Brands? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

10Tim · 05-31-2014, 11:41 AM

I have four quarts of Penzoil Platinum 0w-20, and two quarts of Royal Purple 0w-20.

Both synthetic oils meet or exceed API-SN and ILSAC-GF-5.

I don't see any reason why I couldn't use the two brands together for my next oil change, but I'm just wondering if there is some reason I shouldn't that I'm not aware of.

Yes or no?

P.S. Save the "you'll blow up the world" comments for another time.

Reaper · 05-31-2014, 11:50 AM

unless it says not compatible with other oils on the bottle you're fine. Its the same as changing the oil on a car with a remote oil cooler and using a different brand. Maybe not 2 quarts worth, but you get the idea.

humfrz · 06-01-2014, 03:10 AM

I reckon it would be OK.

humfrz

JFox · 06-01-2014, 08:34 AM

Okay I'll throw in my 2 cents here. Simply speculating, after an oil change, the "extra stuff" in the oil is usually used up. When it's new you're mixing fresh chemical additives.

That being said I seriously doubt anything bad will happen. How many people have had to add oil to their car in an "emergency situation" and didn't have the same kind of oil laying around? More so think how many people get their oil changed at a shop then just add whatever later.

bluesubie · 06-02-2014, 10:15 AM

Quote:

Originally Posted by 10Tim

I have four quarts of Penzoil Platinum 0w-20, and two quarts of Royal Purple 0w-20.

Both synthetic oils meet or exceed API-SN and ILSAC-GF-5.

I don't see any reason why I couldn't use the two brands together for my next oil change, but I'm just wondering if there is some reason I shouldn't that I'm not aware of.

Yes or no?

P.S. Save the "you'll blow up the world" comments for another time.

oH NoES! dON't put PUrpLE fOO-fOO kiDDiE jooS in yR caR! You'll blow up the world!

ASTM D6922 covers you.

Quote:

It is important that engine oils from different manufacturers be homogeneous and miscible with each other, because operators of automotive engines often do not have prior knowledge of the manufacturer of the oil that is currently used in their application, and engine failure can occur if oils are combined that do not stay homogeneous and function properly.

http://www.astm.org/Standards/D6922.htm

-Dennis

kiichiro · 06-02-2014, 11:36 AM

Foaming risks, aside from that it's all good

05-31-2014, 11:41 AM	#1
10Tim Here for the fun Join Date: Sep 2013 Drives: 10 Series FR-S #2478 Location: Lakewood Posts: 112 Thanks: 158 Thanked 133 Times in 53 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Mixing Oil Brands? I have four quarts of Penzoil Platinum 0w-20, and two quarts of Royal Purple 0w-20. Both synthetic oils meet or exceed API-SN and ILSAC-GF-5. I don't see any reason why I couldn't use the two brands together for my next oil change, but I'm just wondering if there is some reason I shouldn't that I'm not aware of. Yes or no? P.S. Save the "you'll blow up the world" comments for another time. __________________ There's just Not Enough Hours in The Day On Flickr http://www.flickr.com/photos/24663968@N00/ On Instagram XLTimbo

05-31-2014, 11:50 AM	#2
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	unless it says not compatible with other oils on the bottle you're fine. Its the same as changing the oil on a car with a remote oil cooler and using a different brand. Maybe not 2 quarts worth, but you get the idea. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

06-02-2014, 11:36 AM	#6
kiichiro corolla specs/GTR looks Join Date: May 2013 Drives: ooh oooh pretty tail lights Location: slower than a accord V6 Posts: 490 Thanks: 229 Thanked 113 Times in 79 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Foaming risks, aside from that it's all good __________________ SOLD THEM BOTH Hers: 2007 987S Mine: 2012 991S That was fun, thanks Hachi

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06-01-2014, 03:10 AM	#3
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,866 Thanks: 28,787 Thanked 31,813 Times in 16,424 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	I reckon it would be OK. humfrz

06-01-2014, 08:34 AM	#4
JFox Member Join Date: May 2014 Drives: 2014 Scion FR-S Location: Somewhere In The Concrete Jungle Posts: 24 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Okay I'll throw in my 2 cents here. Simply speculating, after an oil change, the "extra stuff" in the oil is usually used up. When it's new you're mixing fresh chemical additives. That being said I seriously doubt anything bad will happen. How many people have had to add oil to their car in an "emergency situation" and didn't have the same kind of oil laying around? More so think how many people get their oil changed at a shop then just add whatever later.

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