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5w20 vs 5w50 vs 10w40 Visual Example #4640142
01/19/18 04:55 PM
01/19/18 04:55 PM
Joined: Jan 2016
Posts: 820
NC
Vladiator Offline OP
Vladiator  Offline OP
Joined: Jan 2016
Posts: 820
NC
This, somewhat, represents the actual oil viscosity at room temperatures and way below freezing temperatures.
Oils used in the "test" are:
- LiquiMoly 5w20 (some say that it is Group 3 hydrocracked)
- LiquiMoly 5w50 (supposed to be PAO)
- Conventional Lukoil 10w40 (comparable to SuperTech 10w40 or similar)

Since the video is not in English, I just took screenshots and will explain what is going on.

In this first picture lab probe tubes are filled with oils listed above. Inside goes a small bearing ball. All bearing balls are from the same bearing, so they are identical in size and weight. Then the probe tubes are flipped over at exactly the same time (as they are tied together) and the ball bearing fights the oil viscosity to reach the bottom of the probe tube. Obviously, ball bearing that reaches the bottom first - indicates a lower viscosity of the liquid that it's in, and vice-versa.

At room temperature 5w20(right) is a clear winner, followed by 10w40(center), and 5w50(left) takes the last spot.


After a few hours at freezing temperatures the same oils show interesting results. 5w20 reaches the bottom first. Then 10w40 again has a slight lead over 5w50.


Interesting lesson that not all 5wXX are created equal, and some 5wXX synthetics are more viscous in freezing temps than a 10w40 conventional. Discuss.


2000 Lexus GS300-361k
1999 Lexus GS400-213k
2006 Toyota Camry-187k
2006 Toyota Highlander Hybrid-125k
2009 Scion xB-120k
2013 VW Tiguan-120k
2009 Toyota Tacoma-60k
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640171
01/19/18 05:11 PM
01/19/18 05:11 PM
Joined: Mar 2016
Posts: 1,384
toronto
PeterPolyol Offline
PeterPolyol  Offline
Joined: Mar 2016
Posts: 1,384
toronto
Proof that SAE J300 ratings alone have a very limited scope


"Nobody else has responded to you. Nobody has defended your position. Perhaps that's a clue"
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640190
01/19/18 05:20 PM
01/19/18 05:20 PM
Joined: Mar 2016
Posts: 1,249
CA
CharlieBauer Offline
CharlieBauer  Offline
Joined: Mar 2016
Posts: 1,249
CA
What exactly was the "way below freezing temperature"?


It ain't what you don't know that gets you into trouble. It's what you know for sure that ain't so.

- mistakenly attributed to Mark Twain
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640226
01/19/18 05:49 PM
01/19/18 05:49 PM
Joined: Sep 2016
Posts: 83
Minnesota, USA
Serge Offline
Serge  Offline
Joined: Sep 2016
Posts: 83
Minnesota, USA
Т у ф т а


08 135i (600hp) Redline 5w40
13 X3 28i (375hp) Castrol 0w40
07 Mzd3 2L ST Syn 10w30
11 Mzd6 2.5L ST Syn 10w30
14 Mzd3 2L Dealer 0w20
16 Yukon XL ST Syn 0w20
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640269
01/19/18 06:27 PM
01/19/18 06:27 PM
Joined: Dec 2002
Posts: 41,173
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 41,173
'Stralia
It's not a failing if J300.

J300 defines the pumping CCS aspects of an oil at it's extreme cold end...5W is 5W is W, and then the operational end, with KV100 and HTHS.

You are measuring oils in the middle, where the 20, 40, and 50 are still the major factors at play.

BTW, I am exceptionally impressed with your set-up. You have done well, just need to get -30 to -40C capability.

Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640281
01/19/18 06:41 PM
01/19/18 06:41 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline
Joined: Jul 2017
Posts: 542
Texas (south)
I think the best multigrade to use in the winter is any with a 0w just to play it safe. In my area the perfect oil (protection-wise) would be 0w-40, but the manufacturers require 5w-30 or 0w-30 based on their own testing and I respect that smile

Last edited by FermeLaPorte; 01/19/18 06:41 PM.

Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640307
01/19/18 07:10 PM
01/19/18 07:10 PM
Joined: Jul 2003
Posts: 4,812
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,812
New Zealand
Always puzzled why they test at such extreme low temps...not relavent to me, I want to see them in my temp zone - down to zero C. But that just shows that the W part of an oil means nothing to me, apart from that it does have one...so I can use a 50 at zero.


1987 BMW R65 - Penrite V Twin 20/50
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Silk] #4640312
01/19/18 07:13 PM
01/19/18 07:13 PM
Joined: Dec 2002
Posts: 41,173
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 41,173
'Stralia
Silk, yes 20W anything (and that includes SAE30 these days) is plenty fine for either of us.

Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4640321
01/19/18 07:20 PM
01/19/18 07:20 PM
Joined: Dec 2002
Posts: 41,173
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 41,173
'Stralia

Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Silk] #4640520
01/19/18 10:59 PM
01/19/18 10:59 PM
Joined: Jul 2015
Posts: 4,627
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,627
Down Under
Originally Posted By: Silk
Always puzzled why they test at such extreme low temps...not relavent to me, I want to see them in my temp zone - down to zero C. But that just shows that the W part of an oil means nothing to me, apart from that it does have one...so I can use a 50 at zero.

For me right now, the listed 40C viscosity is my cold start temperature & viscosity, or very close to it. Very nice of the manufacturers to tabulate all their data tables for my home town.


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: SR5] #4640523
01/19/18 11:07 PM
01/19/18 11:07 PM
Joined: Dec 2002
Posts: 41,173
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 41,173
'Stralia
Yeah, was 1 degree off that yesterday arv after work

Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: FermeLaPorte] #4640740
01/20/18 10:11 AM
01/20/18 10:11 AM
Joined: Jul 2003
Posts: 3,097
San Antonio, TX
jorton Offline
jorton  Offline
Joined: Jul 2003
Posts: 3,097
San Antonio, TX
Why? At operating temperature does 0w-40 prevent metal to metal contact better than 0w-30 or 5w-30 does?


"If everything seems under control, you're just not going fast enough."
- Mario Andretti


Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: jorton] #4640891
01/20/18 12:36 PM
01/20/18 12:36 PM
Joined: Jun 2011
Posts: 1,758
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,758
Crawfordville FL
Originally Posted By: jorton
Why? At operating temperature does 0w-40 prevent metal to metal contact better than 0w-30 or 5w-30 does?


In the crankshaft bearings, possibly. Depends on a bunch of other factors


2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: jorton] #4641178
01/20/18 06:08 PM
01/20/18 06:08 PM
Joined: Sep 2015
Posts: 2,326
Malaysia
zeng Online content
zeng  Online Content
Joined: Sep 2015
Posts: 2,326
Malaysia
Originally Posted By: jorton
Why? At operating temperature does 0w-40 prevent metal to metal contact better than 0w-30 or 5w-30 does?

Prevent totally, no.
Prevent partially, yes.
It's higher MOFT reduces duration and frequency of boundary lubrication ,and possibly mixed lubrication regimes in valve trains and ring/liners.

Re: 5w20 vs 5w50 vs 10w40 Visual Example [Re: Vladiator] #4641377
01/20/18 09:57 PM
01/20/18 09:57 PM
Joined: Sep 2015
Posts: 5,951
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,951
Kalifornia Kollective
Wonder what the bearing fall looks like at 150*C ... laugh


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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