Recent Topics
WPA 3 Wireless Security Coming
by StevieC. 09/22/18 01:16 AM
Robo Calls/Telemarketers
by Nick1994. 09/22/18 12:47 AM
What oil should be used!
by BigShug681. 09/22/18 12:28 AM
VW Electronic Parking Brake
by StevieC. 09/21/18 11:48 PM
Leak Sealing and Mould Treatments?
by Ducked. 09/21/18 11:44 PM
UPS / FedEx / USPS
by StevieC. 09/21/18 11:21 PM
puncture repair question
by neo3. 09/21/18 10:55 PM
Can I use a 10 amp extension cord for...
by gregk24. 09/21/18 10:48 PM
In the unlikely event of a crash
by StevieC. 09/21/18 10:09 PM
Craigslist time wasters
by Anduril. 09/21/18 09:41 PM
Who runs a 20wt here?
by StevieC. 09/21/18 07:31 PM
Need help on edit profile
by jetmech1. 09/21/18 06:34 PM
Oil thickness on the dipstick
by Idlewild294. 09/21/18 05:40 PM
Chinese WIX Trans filter bad, let me down..
by jetmech1. 09/21/18 04:47 PM
Gen 8 Accord rear brakes-What tool?
by fdcg27. 09/21/18 04:30 PM
Ammeters?
by buck91. 09/21/18 03:55 PM
Need Help with Double D Knock Out Punch
by user52165. 09/21/18 03:41 PM
Newest Members
JRMFt11, Navyretired, aikwae, ScottRousell, Direct_Rejection
66036 Registered Users
Who's Online Now
19 registered members (BISCUT, chance, Blkstanger, AnthemBassMan, Atesz792, 928, 1 invisible), 687 guests, and 34 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics290,810
Posts4,850,747
Members66,036
Most Online3,590
Jan 24th, 2017
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 2 1 2
Mobil 1 5W-30 vs 0W-30 AFE #4635808
01/15/18 03:00 PM
01/15/18 03:00 PM
Joined: Jan 2018
Posts: 93
Tennessee, United States
ZraHamilton Offline OP
ZraHamilton  Offline OP
Joined: Jan 2018
Posts: 93
Tennessee, United States
I am trying to determine which is better for cold winter start-ups.
The viscosity of the 5W-30 is actually 1 cSt thinner at 40C.

Mobil 1 5W-30 - @40C - 61.7 cSt
Mobil 1 AFE 0W-30 - @40C - 62.9 cSt

However, that is at 104F, and I would like to know how they compare at around 32F (0C).

Thanks to anyone who can help.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635814
01/15/18 03:05 PM
01/15/18 03:05 PM
Joined: Dec 2002
Posts: 40,883
'Stralia
Shannow Online content
Shannow  Online Content
Joined: Dec 2002
Posts: 40,883
'Stralia
At 0C, there's literally absolutely nothing between those two oils.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635849
01/15/18 03:45 PM
01/15/18 03:45 PM
Joined: Jan 2018
Posts: 93
Tennessee, United States
ZraHamilton Offline OP
ZraHamilton  Offline OP
Joined: Jan 2018
Posts: 93
Tennessee, United States
Would there be any difference at -18C?

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635867
01/15/18 04:07 PM
01/15/18 04:07 PM
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
Rolla07 Offline
Rolla07  Offline
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
If your car recommends 5w30, I would just use the 0w30. Even if barely a difference between the two. Same price for the oil, and my experience has been that AFE always runs smoothly in my car. Either will work but I like to think the 0w will be easier on my engine during any cold starts. Even if no difference, what have i lost in ability vs using 5w30?


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635871
01/15/18 04:15 PM
01/15/18 04:15 PM
Joined: Jan 2018
Posts: 93
Tennessee, United States
ZraHamilton Offline OP
ZraHamilton  Offline OP
Joined: Jan 2018
Posts: 93
Tennessee, United States
Thanks for the advice Rolla07. Most of my driving is 10 minute trips, so I want an oil that will heat up as quickly as possible.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635872
01/15/18 04:16 PM
01/15/18 04:16 PM
Joined: Nov 2017
Posts: 91
SC, USA
Bxnanaz Offline
Bxnanaz  Offline
Joined: Nov 2017
Posts: 91
SC, USA
I like 0Ws not only for cold starts but also the higher viscosity index.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635880
01/15/18 04:26 PM
01/15/18 04:26 PM
Joined: Jan 2018
Posts: 93
Tennessee, United States
ZraHamilton Offline OP
ZraHamilton  Offline OP
Joined: Jan 2018
Posts: 93
Tennessee, United States
Agreed. I've also heard that Mobil 1's AFE oils have a high percentage of PAOs in them. This means that it could be achieving the higher viscosity index with little to no viscosity index improvers.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635889
01/15/18 04:33 PM
01/15/18 04:33 PM
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
Here are is the definition under ASTM D5293 for cold cranking.

Cold Crank Viscosity

ASTM D5293- Test Method for Apparent Viscosity of Engine Oils Between -5 and -35 C Using the Cold Crank Simulator

This test method covers the laboratory determination of apparent viscosity of engine oils at temperatures between 5 and -35C and at high shear rates. The results are related to engine cranking characteristics of engine oil. A measured amount of sample is subjected to an extreme low temperature for 3 minutes. The rotor spins for 1 minute in the sample and the speed of the rotor is measured by keeping ohms resistance at zero. The speed-reading is used to determine the viscosity on a calibration curve.



The cold cranking simulator (CCS), ASTM D5293, correlates with engine cranking speed at low temperatures.





Cold cranking viscosity simulates the viscosity of an oil in crankshaft bearings during cold temperature start up.



Cold cranking viscosity limits, determined by the CCS, are defined in the SAE J300 Standard, as shown below:







Cold Crank Viscosity
Low temperature viscosity (mPa s) Max (CCS) Temps are degrees C.
0W 6200 @ -35
5W 6600 @ -30
10W 7000 @ -25
15W 7000 @ -20
20W 9500 @ -15
25W 13000 @ -10



Last edited by Snagglefoot; 01/15/18 04:48 PM.

If you want the job done right......do it yourself.
Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635900
01/15/18 04:47 PM
01/15/18 04:47 PM
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
Originally Posted By: ZraHamilton
I am trying to determine which is better for cold winter start-ups.
The viscosity of the 5W-30 is actually 1 cSt thinner at 40C.

Mobil 1 5W-30 - @40C - 61.7 cSt
Mobil 1 AFE 0W-30 - @40C - 62.9 cSt

However, that is at 104F, and I would like to know how they compare at around 32F (0C).

Thanks to anyone who can help.


At -40 F/C, the results are fairly dramatic and you can make yourself a You Tube video to show everyone. At higher temps the difference is less dramatic. 0W-30 at -35 C flows like 5W-30 at -30 C which flows like 10W-30 at -25 C. I've personally done flow tests at -20 C and I can say you'll notice the difference between 5W-30 and 10W-30, but it is not dramatic like at -40. And yes, you probably wouldn't notice a difference between 0W-30 and 5W-30 at 0 degrees C.

SF

Last edited by Snagglefoot; 01/15/18 04:59 PM.

If you want the job done right......do it yourself.
Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635908
01/15/18 04:58 PM
01/15/18 04:58 PM
Joined: Jun 2015
Posts: 156
montreal ,canada
madeej11 Offline
madeej11  Offline
Joined: Jun 2015
Posts: 156
montreal ,canada
The difference between the two of those oils are negligible at 32F. The 0w30 would pay dividends at roughly -20F which you would hardly ever see in Tennessee. JMO. Good luck.

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: Rolla07] #4635968
01/15/18 06:13 PM
01/15/18 06:13 PM
Joined: Dec 2002
Posts: 40,883
'Stralia
Shannow Online content
Shannow  Online Content
Joined: Dec 2002
Posts: 40,883
'Stralia
Originally Posted By: Rolla07
Either will work but I like to think the 0w will be easier on my engine during any cold starts.


see, that's the problem with the laws of physics...they don't really mind what people like to think.

at 32F, if anything has a slight edge it will be the marginally thinner 5W30.

As to what you've lost
Dexos
HTO-06
lighter basestocks with more "fillers'

Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635974
01/15/18 06:17 PM
01/15/18 06:17 PM
Joined: Oct 2014
Posts: 11,844
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,844
Idaho
The oil viscosity choice will not matter as far as cold starting until you start to ge below -25 *f.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: ZraHamilton] #4635994
01/15/18 06:38 PM
01/15/18 06:38 PM
Joined: Jul 2015
Posts: 480
Pennsylvania
Astro_Guy Offline
Astro_Guy  Offline
Joined: Jul 2015
Posts: 480
Pennsylvania


'01 Volvo V70XC, 228k, 0W-40 M1
'16 Accord, 17k, 0W-20 M1 EP
Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: Astro_Guy] #4636002
01/15/18 06:49 PM
01/15/18 06:49 PM
Joined: Apr 2008
Posts: 37,136
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline
Joined: Apr 2008
Posts: 37,136
Ontario, Canada
Originally Posted By: Astro_Guy


That's not accurate below 0C.

Viscosity measured via CCS and MRV roughly halves as you increase temperature by 5C. So a 0w-30 with a CCS of 5,600cP @ -35C would be roughly 2,800cP @ -30C.

However, the issue is that if you are comparing say a 5w-30 and a 0w-30, at somewhere around -15C, that trick stops working and we start heading toward what you'd see in the calculator. Basically, that's where an oil's VI starts to become relevant. It's not a hard line, as it would vary based on base oil, PPD's, VII treatment....etc but it seems to be somewhere in that neighbourhood.

So we have this range between -15C and 0C where the visc calc isn't accurate and the halving rule isn't either.


2018 RAM 1500 Big Horn EcoDiesel
2016 Grand Cherokee SRT
Re: Mobil 1 5W-30 vs 0W-30 AFE [Re: Bxnanaz] #4636078
01/15/18 07:54 PM
01/15/18 07:54 PM
Joined: Oct 2014
Posts: 11,844
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,844
Idaho
Originally Posted By: Bxnanaz
I like 0Ws not only for cold starts but also the higher viscosity index.
Higher Vi in a finished oil is usually due to more viscosity improvers used. Although I like the 0w- oils myself 1 oil from -35*f to over 100*f.


2015 Ford F150 2.7
2018 Ford F350 6.2
Page 1 of 2 1 2

BOB IS THE OIL GUY® Powered by UBB.threads™