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#4517506 - 09/15/17 11:28 PM When buying hdeo 20w50
leroyd92 Offline


Registered: 01/21/14
Posts: 494
Loc: AZ
Are there some brands that aren't HDEO? Or are all 20w50 apart of the hdeo family?

I know 15w40 has a strong additive pack ( usually) but I've never paid attention to 20w50.
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#4517513 - 09/15/17 11:46 PM Re: When buying hdeo 20w50 [Re: leroyd92]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18150
Loc: Dallas,Tx USA
I've never seen a 20W50 HDEO,only PCMO's.
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1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
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#4517514 - 09/15/17 11:46 PM Re: When buying hdeo 20w50 [Re: leroyd92]
Chris142 Online   content


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
I have never seen a hdeo 20w50.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4517527 - 09/16/17 12:23 AM Re: When buying hdeo 20w50 [Re: leroyd92]
BigJakeChevy Offline


Registered: 07/26/15
Posts: 126
Loc: Alberta

Does this count? This stuff is dual rated and is under amsoils diesel engine oil line on the website


Edited by BigJakeChevy (09/16/17 12:25 AM)
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2007 Silverado Classic 5.3L PPPP 10w30 455,000kms

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#4517534 - 09/16/17 12:53 AM Re: When buying hdeo 20w50 [Re: leroyd92]
beanoil Offline


Registered: 10/17/04
Posts: 2951
Loc: Midwest, Illinois
20w50 are usually PCMO.
Mystik has a 15w50 HDEO, but I have no idea what diesel engine would call for it.
Mystik
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beanoil: Tough under heat, real dirty afterwards.

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#4517540 - 09/16/17 01:13 AM Re: When buying hdeo 20w50 [Re: leroyd92]
Kamele0N Offline


Registered: 02/09/15
Posts: 2038
Loc: Slovenia
Petrol a.k.a (rebranded) Havoline/Texaco...

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2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD various 10w40

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#4517543 - 09/16/17 01:22 AM Re: When buying hdeo 20w50 [Re: leroyd92]
SonofJoe Offline


Registered: 07/23/16
Posts: 1052
Loc: Europe
Even now, in parts of the developing world, the two primary oil grades are 15W40 & 20W50. I would say that PCMO can be either whereas HDDO might usually be 15W40, but not exclusively. In these regions you might also find 20W40 oils which in my experience make stunningly good HDDOs.

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#4517612 - 09/16/17 07:20 AM Re: When buying hdeo 20w50 [Re: leroyd92]
benjy Offline


Registered: 08/23/10
Posts: 865
Loc: pa
older engines of any type can benefit from a higher viscosity @ running temps to compensate for lost oil pressure due to wider worn clearances. early poorly made HD motorcycle engines needed straight 50 + 60 weight oils + still leaked like a siv!!!

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#4517625 - 09/16/17 07:54 AM Re: When buying hdeo 20w50 [Re: leroyd92]
FordCapriDriver Offline


Registered: 10/22/15
Posts: 2377
Loc: Balearic Islands , Spain
Shell makes i think 2 20W-50 HDEO's, Rimula R3-X and R2 Extra, both diesel only rated, no gasoline engine ratings, 20W-50 is rare among HDEOs.
I've seen all these viscosities of HDEO :
5W-30
10W-30
15W-30
SAE 30
SAE 40
SAE 50
5W-40
10W-40
15W-40
20W-40
20W-50
_________________________
1975 Ford Capri II Ghia 3000 V6, - Valvoline VR1 20W-50
1988 Ford Escort MkIV 1.6 Xr3i Cabrio, - Shell Rimula R4X 15W-40 HDEO.

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#4517705 - 09/16/17 09:49 AM Re: When buying hdeo 20w50 [Re: leroyd92]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
The Mystik 15W-50 is semi-synthetic, relatively inexpensive, and works GREAT in Harley Davidson engines.
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"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4518357 - 09/17/17 07:16 AM Re: When buying hdeo 20w50 [Re: leroyd92]
zeng Online   content


Registered: 09/01/15
Posts: 2185
Loc: Malaysia
Well , 20W50 in HDEO and PCMO are common here.


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#4519988 - 09/19/17 05:45 AM Re: When buying hdeo 20w50 [Re: leroyd92]
alarmguy Offline


Registered: 07/10/12
Posts: 2147
Loc: South Carolina
Except for the few mentioned here. 20W50 HEDO is almost impossible to find in the USA, yet is readily available throughout the rest of the world. Frustrating for sure.

Only ones I know of are the two mentioned here, Mystik JT8 (15/50 semi syn) and Amsoil (20w50 syn).
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14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50

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#4520853 - 09/20/17 01:32 AM Re: When buying hdeo 20w50 [Re: alarmguy]
Garak Offline


Registered: 12/05/09
Posts: 24574
Loc: Regina, Saskatchewan, Canada
I don't think we saw much of a 20w-50 in any type of HDEO beyond CF, really, and that's when CF was on everything.
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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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#4529626 - 09/29/17 05:41 PM Re: When buying hdeo 20w50 [Re: leroyd92]
userfriendly Offline


Registered: 06/03/03
Posts: 2629
Loc: LaFinDuMonde
I just cleaned off the shelf at Walmart of 20W50 Castrol motorcycle oil on 1/2 price. I'll try it out in my LML Duramax next summer. Petro-Canada just rolled out 2 Duron 20W50s and 15W40s; Classic GH-4 and Extra CJ-4.


Edited by userfriendly (09/29/17 05:42 PM)

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#4529897 - 09/29/17 10:29 PM Re: When buying hdeo 20w50 [Re: leroyd92]
addyguy Offline


Registered: 09/08/05
Posts: 14287
Loc: Canada
I believe Petro-Canada now makes a 20W-50 HDEO now.
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2010 Kia Soul 2U - 2.0L I-4, auto; 126k miles.
M1 EP 10W-30; OEM Kia filter.

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