Recent Topics
NC License Plates
by Zee09
06/22/18 01:31 PM
BITOG Hotline!
by Duffyjr
06/22/18 01:30 PM
Switching Additives: Flush/Rinse?
by Phishin
06/22/18 12:46 PM
increasing viscosity
by VQLT
06/22/18 12:31 PM
Who's up on their metallurgy?
by earlyre
06/22/18 11:56 AM
Replaced halogen headlight with LED
by gman2304
06/22/18 11:18 AM
Web Archive
by Duffyjr
06/22/18 10:25 AM
Sonoma This weekend!
by racin4ds
06/22/18 10:22 AM
low water pressure on new kitchen faucet
by Joe1
06/22/18 09:40 AM
Flashing third tail light
by Brigadier
06/22/18 08:59 AM
Intermittent AC Cooling
by Gebo
06/22/18 08:59 AM
Who includes full size spare in tire rotation?
by Parlay_Slow
06/22/18 08:45 AM
Crude and foul behavior
by mjoekingz28
06/22/18 08:31 AM
Best Off The Shelf Car Wash Liquid ?
by ChrisD46
06/22/18 08:30 AM
Wrecking Yards
by Snagglefoot
06/22/18 08:26 AM
F1 - 2018 French Grand Prix
by gofast182
06/22/18 08:14 AM
AAP 25% Off
by Egg_Head
06/22/18 06:03 AM
GM Ecotec 2.4 - Cracked Exhaust Manifold
by The Critic
06/22/18 05:05 AM
Half Price - Shell Helix HX7, Castrol Edge and GTX
by SR5
06/22/18 03:59 AM
Why hang your bicycle from the ceiling?
by mjoekingz28
06/22/18 03:47 AM
Newest Members
Fatbrowndog0822, DRNJR, ZEK, Dudewayne, kmdz
65294 Registered Users
Who's Online
86 registered (2K2AcuraTL, 92saturnsl2, 4WD, Ag76, 2015_PSD, 10 invisible), 1597 Guests and 32 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65294 Members
67 Forums
285769 Topics
4769291 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4506766 - 09/03/17 09:31 PM Simple mixing question
danez_yoda Offline


Registered: 07/18/09
Posts: 464
Loc: texas
2014 sienna takes 6.4 quarts of 0w20. I have a 5 qt jug of 0w20 (PP) and a partial jug of 5W30(PP).

If I put 5qt of 0w20 and and 1.4QT of 5W30 PP what would the equivalent viscosity be? Something in the 5w20 range?

Top
#4506770 - 09/03/17 09:37 PM Re: Simple mixing question [Re: danez_yoda]
pbm Offline


Registered: 04/19/04
Posts: 7605
Loc: New York
I don't know what the viscosity would be but I think it would be fine for use in Texas....especially since they are from the same oil family (similar additive package)....
_________________________
'Journalism is Dead'

Top
#4506773 - 09/03/17 09:40 PM Re: Simple mixing question [Re: danez_yoda]
Ducked Offline


Registered: 10/25/12
Posts: 4368
Loc: Taiwan
I guessed it wouldn't be, and it isn't.

It can't be calculated, but will be skewed toward the lower viscosity component.

Top
#4506775 - 09/03/17 09:41 PM Re: Simple mixing question [Re: danez_yoda]
PimTac Online   content


Registered: 03/04/17
Posts: 4303
Loc: Soviet State of Washington
At that ratio it would be pretty close to 0w-20. The difference will be very small.
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


Top
#4506779 - 09/03/17 09:47 PM Re: Simple mixing question [Re: danez_yoda]
Colt45ws Offline


Registered: 08/15/06
Posts: 9643
Loc: Central Washington
PP 5W30 is 10.3cSt
PP 0W20 is 8.3cSt
~78% 0W20
Mix is 8.7cSt, or in 20 grade range.
The W rating is harder to calculate becuase they are done at different temperatures.. IT may or may not fail a 0W test run in a lab. My gut instinct is that it would be super border on 0W/5W

Ref:
http://www.pennzoil.com/en_us/products/f...c-Motor-Oil.pdf
http://www.pennzoil.com/en_us/products/f...c-Motor-Oil.pdf
http://www.widman.biz/English/Tables/J300.html
http://www.widman.biz/English/Calculators/Mixtures.html
_________________________
-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

Top
#4506797 - 09/03/17 09:57 PM Re: Simple mixing question [Re: danez_yoda]
Danh Offline


Registered: 10/16/10
Posts: 1750
Loc: .
You can Google "Widman Calculator" to determine the viscosity of a blend of two oils. You'll have to know the product specs to do this, but you can find them on Pennzoil's website.

But, as Pennzoil motor oils tend to be on the light side of a viscosity range, the mixture you're talking about will almost surely be in the 20- weight grade at 100C. Keep in mind that a viscosity specification allows a range of viscosities to qualify. For example, a 20-weight oil at 100C can have a viscosity of between 6.9 and 9.2 cenistokes (cSt), but most oils are in the 8.0-9.0 range. I'd guess your proposed mixture would wind up at around 8.6, or about like a typical 20-weight.

Top
#4506895 - 09/04/17 01:19 AM Re: Simple mixing question [Re: Ducked]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Ducked

It can't be calculated, but will be skewed toward the lower viscosity component.


Shannow posted something a couple months ago.

Apparently, it gets skewed to the high viscosity components.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4506896 - 09/04/17 01:20 AM Re: Simple mixing question [Re: Colt45ws]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Colt45ws

The W rating is harder to calculate becuase they are done at different temperatures.


He's in Texas.... Effectively, he can ignore the W numbers. Even on those cold snap days up in the panhandle that happen a few days each winter.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4507113 - 09/04/17 10:20 AM Re: Simple mixing question [Re: Colt45ws]
Ducked Offline


Registered: 10/25/12
Posts: 4368
Loc: Taiwan
Originally Posted By: Colt45ws
PP 5W30 is 10.3cSt
PP 0W20 is 8.3cSt
~78% 0W20
Mix is 8.7cSt, or in 20 grade range.
The W rating is harder to calculate becuase they are done at different temperatures.. IT may or may not fail a 0W test run in a lab. My gut instinct is that it would be super border on 0W/5W

Ref:
http://www.pennzoil.com/en_us/products/f...c-Motor-Oil.pdf
http://www.pennzoil.com/en_us/products/f...c-Motor-Oil.pdf
http://www.widman.biz/English/Tables/J300.html
http://www.widman.biz/English/Calculators/Mixtures.html


Sorry, I shouldn't have said it can't be calculated, but its my understanding that for multigrades it can't be calculated with much confidence in the accuracy of the result.

Top
#4507118 - 09/04/17 10:23 AM Re: Simple mixing question [Re: danez_yoda]
CT8 Offline


Registered: 10/09/14
Posts: 10984
Loc: Idaho
You will end up with a blend of 5 qts 0W-20 and 1.4 Qts of 5W-30.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4507122 - 09/04/17 10:30 AM Re: Simple mixing question [Re: danez_yoda]
ATex7239 Offline


Registered: 01/19/17
Posts: 331
Loc: Texas,USA
Oil is cheap, engines aren't. I don't think 1 or 2 quarts of full synthetic is going to sway anyone's finances one way or another, but a damaged engine might.

I used to mix oils all the time. But now with modern engines, I don't think it's worth the risk.
_________________________
'12 Buick Enclave 139,xxx
Valvoline ML SynBlend 5w30
ACDelco PF63E

'17 Ford Fusion (Company Lease) 42,xxx
Oil Don't know
Filter Don't care

Top
#4507125 - 09/04/17 10:36 AM Re: Simple mixing question [Re: Linctex]
Ducked Offline


Registered: 10/25/12
Posts: 4368
Loc: Taiwan
Originally Posted By: Linctex
Originally Posted By: Ducked

It can't be calculated, but will be skewed toward the lower viscosity component.


Shannow posted something a couple months ago.

Apparently, it gets skewed to the high viscosity components.


That's the sort of thing I could get the wrong way around, but I doubt Molakule would be agreeing with me if I did.

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4279826/Ducked#Post4279826

Top
#4507142 - 09/04/17 10:57 AM Re: Simple mixing question [Re: danez_yoda]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
Approximately 1.09w22.18. grin

Just run it.


Edited by Kuato (09/04/17 10:58 AM)
_________________________
Thick vs Thin test: 15k / 43k miles complete

Top
#4507152 - 09/04/17 11:07 AM Re: Simple mixing question [Re: danez_yoda]
Donald Online   content


Registered: 03/21/04
Posts: 20457
Loc: Upstate NY
Use the right oil and save the partial oil for your mower.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


Top
#4507359 - 09/04/17 04:09 PM Re: Simple mixing question [Re: danez_yoda]
fdcg27 Offline


Registered: 09/25/09
Posts: 15699
Loc: OH
While there is no way of really knowing, my guess is that you'll end up with an oil that'll be of the 5W-20 grade.
Many of us were adamantly opposed to mixing until Sonofjoe posted a reply in another thread that put most of our concerns to rest.
Nothing weird will happen with this mix and it seems convenient for you.
It's not as though a 0W qualified oil is needed in Texas or just about anywhere else in the lower forty eight.
_________________________
17 Forester 12K MSS 0W-20
12 Accord LX 86K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

Top
Page 1 of 2 1 2 >