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0W-16 and 0W-30 blend #5160023
07/14/19 01:09 AM
07/14/19 01:09 AM
Joined: Sep 2004
Posts: 1,608
Saskatchewan, Canada
pitzel Offline OP
pitzel  Offline OP

Joined: Sep 2004
Posts: 1,608
Saskatchewan, Canada
What ratios are required generally to achieve a 0W-20 viscosity by blending 0W-16 and 0W-30 oil? I have a stockpile of 0W-30 that I want to run in a 0W-20 application...


Change your thinking...not your oil!
Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160029
07/14/19 01:17 AM
07/14/19 01:17 AM
Joined: Feb 2014
Posts: 3,198
Yellowbrick Rd(KS)SemiRetired
Marco620 Offline
Marco620  Offline

Joined: Feb 2014
Posts: 3,198
Yellowbrick Rd(KS)SemiRetired
Run the 0w30 as is. Forget the W16. Use up the 0w30


15' Civic 1.8 i-vtec 254,000 mi Redline 5/0w20, BP transmax cvt fluid & Archoil9100
Tornado Chaser Extraordinar!
Son of a Navy Corpsman. Support vets!


Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160039
07/14/19 02:36 AM
07/14/19 02:36 AM
Joined: Nov 2018
Posts: 1,061
Chicagoland
Skippy722 Online content
Skippy722  Online Content

Joined: Nov 2018
Posts: 1,061
Chicagoland
0w30 won’t hurt a vehicle calling for 0w20.


2016 Chrysler 300S v6
2018 Dodge Grand Caravan GT

Slight Mopar obsession
Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160053
07/14/19 04:01 AM
07/14/19 04:01 AM
Joined: Aug 2009
Posts: 2,421
PA
Gasbuggy Offline
Gasbuggy  Offline

Joined: Aug 2009
Posts: 2,421
PA
Need about 1.5 quarts w16 to every 1 of w30 to get close to 0w20.


Cadillac CTS-V 6.2L 10w30PP
Volvo P1800 Euro L
76 Mercedes 300D Rotella T4
Series III Land Rover VWB
02 Yukon 10w30 PP
01 P71 M1 EP-HM 0W20
95 Accord - 386k. Mobil 2 RIP
Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160061
07/14/19 04:47 AM
07/14/19 04:47 AM
Joined: Jul 2017
Posts: 961
WA
OilUzer Offline
OilUzer  Offline

Joined: Jul 2017
Posts: 961
WA
your engine will appreciate the 0Wx30 much better than unkownW20
Also your friends may see you buying 0Wx16 shocked2

Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160085
07/14/19 06:42 AM
07/14/19 06:42 AM
Joined: Apr 2015
Posts: 507
Upper midwest
Mainia Offline
Mainia  Offline

Joined: Apr 2015
Posts: 507
Upper midwest
Turn into a "thicky" and drop that light stuff. I never have and never will run anything below 0w-30 or 5w-30 as long as its available. Come on, how long have you been here. You should know going up one 10 series makes zero difference in cars available in today's market.

Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160092
07/14/19 06:55 AM
07/14/19 06:55 AM
Joined: Jul 2014
Posts: 1,201
Winnipeg MB CA
Number_35 Offline
Number_35  Offline

Joined: Jul 2014
Posts: 1,201
Winnipeg MB CA
I agree with the other posters - I would stick with the 0W-30.

But, if I were to mix, I would go with the same manufacturer. This is the easy way to do it, but it's wrong! Read on ...

1 litre of 0W-16 mixed with 1 litre of 0W-30 would yield 2 litres of 0W-23

2 litres of 0W-16 mixed with 1 litre of 0W-30 would yield 3 litres of 0W-21.3

3 litres of 0W-16 mixed with 1 litre of 0W-30 would yield 4 litres of 0W-19.5

5 litres of 0W-16 mixed with 2 litres of 0W-30 would yield 7 litres of 0W-20

... and so on. This is not a reliable way to calculate viscosity.

Given that there's a range of viscosity for any given weight of oil, it really all depends on the manufacturer. The alleged 0W-23 (the result of a 50/50 mix) might have a viscosity that falls into the 0W-20 range. Ditto for all of the others. Let's check:

https://www.oilspecifications.org/articles/introducing-the-sae-8-and-sae-12-viscosity-grades.php

http://infomechanical.blogspot.com/2010/09/lubrication-oil-meaning-number-sea-20w.html

https://www.bobistheoilguy.com/viscosity-charts/

SAE 16 weight has a range of 6.1 - 8.2 cSt @ 100 C.

SAE 20 weight has a range of 5.6 - 9.3 cSt @ 100 C.

SAE 30 weight has a range of 9.3 - 12.5 cSt @ 100 C.

The overlap between SAE 16 and 20 is weird; I wonder whether they'll up the lower range of the SAE 20. As is, an oil with a viscosity anywhere from 6.1 to 8.2 could be either a 16 or 20 weight. This confusing article seems to imply that the viscosity range for SAE 20 will be raised from 5.6 to 6.9 cSt @ 100 C:

https://www.oilspecifications.org/articles/sae-16-viscosity-grade.php

Regardless,

Mobil 1's 0W-16 has a viscosity (@ 100 C) of 7.2 cSt.

Mobil 1's 0W-20 has a viscosity (@ 100 C) of 8.8 cSt.

Mobil 1's 0W-30 has a viscosity (@ 100 C) of 10.9 cSt.

If you were to mix Mobil 0W-16 and 0W-30 50:50, you'd get a viscosity of 9.05, still near the top of the SAE 20 viscosity range. If I were to mix, this is what I'd do. But, let's say you have a 5 litre sump - one bottle of M1 0w-30 and four of M1 0W-20 would give you a viscosity of 9.22, near the top of, but within, the SAE 20 range. No SAE 16-weight required!

Good question, I learned a lot going down this rabbit hole.

Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160099
07/14/19 07:00 AM
07/14/19 07:00 AM
Joined: Dec 2002
Posts: 43,183
'Stralia
Shannow Online content
Shannow  Online Content

Joined: Dec 2002
Posts: 43,183
'Stralia
:facepalm:

I have no idea why I visit BITOG


If it's the truth....it can handle the pressure !!!
Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160104
07/14/19 07:11 AM
07/14/19 07:11 AM
Joined: May 2009
Posts: 13,090
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline

Joined: May 2009
Posts: 13,090
N.H, U.S.A.
The HTHS for a 0w16 is 2.3 mPa.s.

Forget the KV100 target.

How much 0w30 do you have and is it ILSAC GF or ACEA A3?

If you only have a couple litres, you could run, say, 1 litre in each sump of say 4.5L without notice.


2019 VW Jetta S 6MT OCI#0 5033mi-Castrol Edge Prof? VW508+OE Filter; '17 Subaru Crosstrek CVT OC#7 52665mi-Castrol GTX Magnatec 5W20 + SOA Filter
Re: 0W-16 and 0W-30 blend [Re: Shannow] #5160106
07/14/19 07:12 AM
07/14/19 07:12 AM
Joined: Dec 2017
Posts: 2,345
CO
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 2,345
CO
Originally Posted by pitzel
What ratios are required generally to achieve a 0W-20 viscosity by blending 0W-16 and 0W-30 oil? I have a stockpile of 0W-30 that I want to run in a 0W-20 application...


What's the application?

I totally agree with simply using the 30.




Originally Posted by Shannow
:facepalm:

I have no idea why I visit BITOG


Why, because this thread is almost identical to the hundreds (?) of "How can I mix 0w20 with 0w40 to get a xxw30" threads? LOL

Me either.


I use the overseas manual to choose my oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 149k, SS5w30/Amsoil

His: 2015 4Runner 55k, SS 5w20/Amsoil

Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160151
07/14/19 08:19 AM
07/14/19 08:19 AM
Joined: Oct 2010
Posts: 7,346
Michigan
A_Harman Offline
A_Harman  Offline

Joined: Oct 2010
Posts: 7,346
Michigan
Originally Posted by pitzel
What ratios are required generally to achieve a 0W-20 viscosity by blending 0W-16 and 0W-30 oil? I have a stockpile of 0W-30 that I want to run in a 0W-20 application...


Most 20-weights cluster near the low end of the 30 range, so it doesn't make much difference to the fuel economy potential if the 0w30 you have is at the low end of the range.
But let's get down to specifics. What 0w30 do you have? What 0w16 do you want to mix in with it? What viscosity are you targeting? If those are known, plug the values into the Widman viscosity calculator, and find the proportions that are required.

Last edited by A_Harman; 07/14/19 08:21 AM.

1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck
Re: 0W-16 and 0W-30 blend [Re: Shannow] #5160160
07/14/19 08:31 AM
07/14/19 08:31 AM
Joined: Jan 2011
Posts: 3,906
PV Az @ 5000'
AZjeff Offline
AZjeff  Offline

Joined: Jan 2011
Posts: 3,906
PV Az @ 5000'
Originally Posted by Shannow
duh

I have no idea why I visit BITOG


But why not? You find the same anal-retentive stuff on any forum you visit, in this case attempting to strictly follow the oil requirements in the owner's manual by blending an approximation in the garage because 0W-30 just isn't correct. It's entertainment. Take one of your deep breaths and endeavor to persevere.

@pitzel: sell the -30 and get the right oil or you'll never sleep.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
18 Nissan Titan 5.6 DI, QSUD

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: 0W-16 and 0W-30 blend [Re: Shannow] #5160220
07/14/19 09:26 AM
07/14/19 09:26 AM
Joined: May 2018
Posts: 971
South Carolina
ka9mnx Offline
ka9mnx  Offline

Joined: May 2018
Posts: 971
South Carolina
Originally Posted by Shannow
:facepalm:

I have no idea why I visit BITOG

I'm no where as intelligent as you on this stuff but some of what people come up with is obviously ridiculous.


2005 Ranger 3.0 - SuperTech Syn 5w-30/Motorcraft
2000 4Runner 3.4 - SuperTech Syn 5w-30/Toyota
1997 B2500 Van 3.9 - M1 HM 10w-30/Mopar
1993 F150 4.9 - SuperTech Syn 5w-30/Motorcraft
Re: 0W-16 and 0W-30 blend [Re: pitzel] #5160594
07/14/19 03:18 PM
07/14/19 03:18 PM
Joined: Jul 2017
Posts: 961
WA
OilUzer Offline
OilUzer  Offline

Joined: Jul 2017
Posts: 961
WA
btw, by unknownW20 I meant that the W part will be "unknown" according to experts in several other threads ... It can potentially cause issues (rare?) if you live in cold places which seems like you do. Shannow has explained that a few times if you search.

Re: 0W-16 and 0W-30 blend [Re: Shannow] #5160641
07/14/19 04:21 PM
07/14/19 04:21 PM
Joined: Mar 2016
Posts: 2,214
Western S.C.
CR94 Offline
CR94  Offline

Joined: Mar 2016
Posts: 2,214
Western S.C.
Originally Posted by Shannow
... I have no idea why I visit BITOG
Calculating 0W-21.3 isn't ridiculous enough to be entertaining?


2011 Toyota Prius now at 101K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
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