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Why is syn 5W20 still sold if syn 0W20 is better? #4592887
12/03/17 10:57 AM
12/03/17 10:57 AM
Joined: Apr 2012
Posts: 9,408
Kendall, FL
wemay Offline OP
wemay  Offline OP
Joined: Apr 2012
Posts: 9,408
Kendall, FL
-0W20 supposedly uses better base oils.
-In extreme cold, it flows better.
-They are equally priced.
-0W20 supposedly has better start-up protection.

The only thing i can see where 5w20 holds an edge, albeit a slight one, is in better Noack numbers.


'18 KIA Sportage LX AWD 2.4L: MSS 10w30
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592892
12/03/17 11:04 AM
12/03/17 11:04 AM
Joined: Apr 2013
Posts: 5,784
FL, USA
gregk24 Offline
gregk24  Offline
Joined: Apr 2013
Posts: 5,784
FL, USA
Some vehicles still require 5w20 per the owners manual.


2012 Honda Accord EX-L K24z3
54,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
40,xxx miles
Castrol OEM dealer fill / OEM filter
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592893
12/03/17 11:05 AM
12/03/17 11:05 AM
Joined: Apr 2015
Posts: 279
Georgia
Charlie2015 Offline
Charlie2015  Offline
Joined: Apr 2015
Posts: 279
Georgia
Are you saying 5w20 is a bad product? If I have a car that takes x grade of oil, maybe I want to use x grade of oil.


1998 Honda Accord EX 2.3L Auto
2009 Scion TC Manual
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: Charlie2015] #4592895
12/03/17 11:08 AM
12/03/17 11:08 AM
Joined: Apr 2012
Posts: 9,408
Kendall, FL
wemay Offline OP
wemay  Offline OP
Joined: Apr 2012
Posts: 9,408
Kendall, FL
Originally Posted By: Charlie2015
Are you saying 5w20 is a bad product? If I have a car that takes x grade of oil, maybe I want to use x grade of oil.


Not at all. Just thinking that because they're so close in performance, why both?

I myself use 5W20 but would have no issue using 0W either.


'18 KIA Sportage LX AWD 2.4L: MSS 10w30
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592903
12/03/17 11:17 AM
12/03/17 11:17 AM
Joined: Oct 2010
Posts: 1,784
.
Danh Offline
Danh  Offline
Joined: Oct 2010
Posts: 1,784
.
5w-20 can be conventional, 0w-20 is typically a full synthetic. Some OEMs may specify 5w-20 to give owners and dealers a cheaper option.

Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592904
12/03/17 11:18 AM
12/03/17 11:18 AM
Joined: Jan 2009
Posts: 13,837
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,837
Illinois
It's all about the warranty. I use M1 0-20 and it has the Ford spec, but I pay little attention to manufacturer spec anyways.


2007 Ford Fusion 232,000 miles
M1 0-20 EP
2017 Ford Fusion 55K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters

Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: Danh] #4592905
12/03/17 11:19 AM
12/03/17 11:19 AM
Joined: Apr 2012
Posts: 9,408
Kendall, FL
wemay Offline OP
wemay  Offline OP
Joined: Apr 2012
Posts: 9,408
Kendall, FL
Originally Posted By: Danh
5w-20 can be conventional, 0w-20 is typically a full synthetic. Some OEMs may specify 5w-20 to give owners and dealers a cheaper option.


Excellent point. My assumption is this is most likely.


'18 KIA Sportage LX AWD 2.4L: MSS 10w30
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592917
12/03/17 11:37 AM
12/03/17 11:37 AM
Joined: Apr 2012
Posts: 9,408
Kendall, FL
wemay Offline OP
wemay  Offline OP
Joined: Apr 2012
Posts: 9,408
Kendall, FL
...that makes sense from the OE pov, but why would the oil mfcs offer 5W20 in synthetic then? Why not a conventional (5w20) and a synthetic (0w20)?


'18 KIA Sportage LX AWD 2.4L: MSS 10w30
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592929
12/03/17 11:47 AM
12/03/17 11:47 AM
Joined: Oct 2009
Posts: 3,239
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,239
Wet side WA
Even on the Subaru Website they tell you 5w-30 gives better protection in the first 10 minutes of start up. Isn't that were they claim 25% of engine wear occurs?

https://www.patriotsubaru.com/synthetic-oil.htm


2004 Corolla 124900
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592930
12/03/17 11:48 AM
12/03/17 11:48 AM
Joined: Jun 2017
Posts: 555
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 555
DFW
In my opinion, the two are interchangeable. If I'm running synthetic, I don't see a reason to use 5W over 0W, all things being equal. However, price and warranty considerations should be accounted for. As I said in another thread, I picked up some Mobil 1 0W-20 AFE on sale ($19.99) which I will run in my Elantra next OCI, though my manual calls for 5W-20.

Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592932
12/03/17 11:51 AM
12/03/17 11:51 AM
Joined: Apr 2012
Posts: 9,408
Kendall, FL
wemay Offline OP
wemay  Offline OP
Joined: Apr 2012
Posts: 9,408
Kendall, FL
I recently bought Idemitsu 0W30 on clearance as well.


'18 KIA Sportage LX AWD 2.4L: MSS 10w30
'13 Hyundai Santa Fe Sport 2.0T: EDGE 5w30
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592944
12/03/17 12:01 PM
12/03/17 12:01 PM
Joined: May 2015
Posts: 258
So. Calif.
turnbowm Offline
turnbowm  Offline
Joined: May 2015
Posts: 258
So. Calif.
While the car is under warranty, I always follow the Owners Manual when it comes to oil spec and grade. Not going to give the manufacturer a reason/excuse to deny a warranty claim.


2015 Kia Optima EX 2.4L GDI
2015 Chevy Volt
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592951
12/03/17 12:10 PM
12/03/17 12:10 PM
Joined: May 2002
Posts: 20,799
Oakville, Ontario
Patman Offline
Patman  Offline
Joined: May 2002
Posts: 20,799
Oakville, Ontario
I feel the same way about 10w30. I feel it's an obsolete viscosity now that 5w30 is well established, however 10w30 is probably the biggest selling viscosity in the history of motor oil so it may never go away. So in a similar vein we may never see 5w20 go away either.


2018 Corvette (M1 5w30 ESP Formula & Fram Ultra)
2006 Civic EX Coupe (PUP 5w20 & Fram Ultra)
2010 BMW 328i X-Drive (GC 0w40 & Fram Ultra)

Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592955
12/03/17 12:13 PM
12/03/17 12:13 PM
Joined: Apr 2016
Posts: 1,185
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,185
Campbellsville, KY
Seems to me the answer is "We just aren't there yet."

Like 10w40 vs. 10w30 - how many years did the two exist before (just recently) '40 started getting harder to find and fewer different options? 0w20 is, what, 5 years old? I can see the merit of the options basically being 5w20 conventional/syn blend with 0w20 as an almost universally cross-compatible full syn, but some folks (me included, at times) are gonna hang on to their 5w.


I like Chevy and Valvoline.

'13 Cruze, 1.4T, 113K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 169K
'67 Suburban, 350, 331K
Re: Why is syn 5W20 still sold if syn 0W20 is better? [Re: wemay] #4592959
12/03/17 12:18 PM
12/03/17 12:18 PM
Joined: Dec 2009
Posts: 25,424
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,424
Regina, Saskatchewan, Canada
Originally Posted By: wemay
The only thing i can see where 5w20 holds an edge, albeit a slight one, is in better Noack numbers.

Greg's reasoning is sound, at least behind the marketing. Most of us here know a 0w-20 works in most 5w-20 applications. Some people won't deviate, though, and some oil companies won't let their recommendations deviate outside the automakers' recommendations, either.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
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