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High mileage 10w40 VS standard hdeo 15w40? #4473454
07/28/17 09:55 PM
07/28/17 09:55 PM
Joined: Jan 2014
Posts: 522
AZ
leroyd92 Offline OP
leroyd92  Offline OP

Joined: Jan 2014
Posts: 522
AZ
Could high mileage 10w40 be used in place of hdeo 15w40?

It seems like HM oil has stuff in it like hdeo does...

I'm asking because several people have asked me this question in regards to diesel application and also heavy duty gas stuff. (Off road toys or boats )


Id like to hear what you all feel.


Supertech Junky
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473476
07/28/17 10:14 PM
07/28/17 10:14 PM
Joined: Dec 2016
Posts: 8,056
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,056
Waco, TX
Good question!

I don't know if all the pertinent data to make an "educated guess" is available to the public.

10W-40 has had some problems in the past with shearing that 15W-40 typically doesn't suffer from.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473503
07/28/17 10:57 PM
07/28/17 10:57 PM
Joined: Jun 2003
Posts: 2,821
BC, Canada
userfriendly Offline
userfriendly  Offline

Joined: Jun 2003
Posts: 2,821
BC, Canada
The question should be 15W40 HDEO instead of 10W40 HM. Motorcycle 10w40 when on sale is a good compromise.

Last edited by userfriendly; 07/28/17 11:00 PM.
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473554
07/29/17 12:11 AM
07/29/17 12:11 AM
Joined: Sep 2014
Posts: 2,207
US-WA
Dyusik Offline
Dyusik  Offline

Joined: Sep 2014
Posts: 2,207
US-WA
Only when cold temp comes into play is it a question for me. Otherwise always HDEO get my vote.


95 Cherokee 190K DELO 10W30, XG8
07 IS250 106K STP syn HM 10w30, FULL
04 YZF-R1 19K DELO 15w40, XG7317
99 HD XL1200S 21K VR1 20w50, NG1515
14 RX450h 40k Idemitsu 0w20, 57047
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473556
07/29/17 12:18 AM
07/29/17 12:18 AM
Joined: Sep 2015
Posts: 2,560
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,560
Malaysia
I wouldn't think so.
HDEO 15W40 in place of 10W40, yes.

Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473670
07/29/17 07:12 AM
07/29/17 07:12 AM
Joined: Jan 2017
Posts: 1,139
USA
ArcticDriver Offline
ArcticDriver  Offline

Joined: Jan 2017
Posts: 1,139
USA
If you are talking about a diesel application then I would think definitely not.







Multiple Diesel and Gasoline vehicles
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: zeng] #4473673
07/29/17 07:15 AM
07/29/17 07:15 AM
Joined: Jan 2017
Posts: 1,139
USA
ArcticDriver Offline
ArcticDriver  Offline

Joined: Jan 2017
Posts: 1,139
USA
Originally Posted By: zeng
I wouldn't think so.
HDEO 15W40 in place of 10W40, yes.


+1

Zeng has clearly identified the distinction.


Multiple Diesel and Gasoline vehicles
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473724
07/29/17 08:42 AM
07/29/17 08:42 AM
Joined: Jan 2014
Posts: 522
AZ
leroyd92 Offline OP
leroyd92  Offline OP

Joined: Jan 2014
Posts: 522
AZ
I need to clarify.

People are buying HM 10w40 to use in place of 15w40.


Supertech Junky
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473832
07/29/17 11:21 AM
07/29/17 11:21 AM
Joined: Sep 2015
Posts: 6,181
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,181
Kalifornia Kollective
HDEO has additives to keep soot in suspension and very good base stocks.

10W-40HM may have good base stocks (or a ton of VII's ... frown ) and has nothing for soot. OK in a gasser, not good in a diesel ...

Last edited by BrocLuno; 07/29/17 11:22 AM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4473856
07/29/17 12:08 PM
07/29/17 12:08 PM
Joined: Jan 2016
Posts: 868
NC
Vladiator Offline
Vladiator  Offline

Joined: Jan 2016
Posts: 868
NC

Valvoline MaxLife 15w40. Best of both worlds. HDEO&HM.

Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4474075
07/29/17 06:25 PM
07/29/17 06:25 PM
Joined: Sep 2015
Posts: 6,181
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,181
Kalifornia Kollective
Cool smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4474114
07/29/17 07:51 PM
07/29/17 07:51 PM
Joined: Sep 2014
Posts: 1,554
Seattle-ish, WA
Oro_O Offline
Oro_O  Offline

Joined: Sep 2014
Posts: 1,554
Seattle-ish, WA
Originally Posted By: leroyd92
I need to clarify.

People are buying HM 10w40 to use in place of 15w40.



In a gas engine or in a diesel?

Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4474340
07/30/17 04:31 AM
07/30/17 04:31 AM
Joined: Dec 2009
Posts: 26,934
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline

Joined: Dec 2009
Posts: 26,934
Regina, Saskatchewan, Canada
If it's something calling for CF or older, probably. But, I wouldn't try it with something new.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4474355
07/30/17 05:23 AM
07/30/17 05:23 AM
Joined: Jun 2012
Posts: 1,176
Australia
supercity Offline
supercity  Offline

Joined: Jun 2012
Posts: 1,176
Australia
It meets A3/B3 so it would work ok in some light diesels. For anything really requiring HDEO CG-4 to CI-4+ it would probably be OK for a short interval but why would you?

Re: High mileage 10w40 VS standard hdeo 15w40? [Re: leroyd92] #4474620
07/30/17 12:06 PM
07/30/17 12:06 PM
Joined: Oct 2014
Posts: 779
Pa, USA
NH73 Online content
NH73  Online Content

Joined: Oct 2014
Posts: 779
Pa, USA
Stick with HDEO for a diesel. Regular gassers, it would be OK.


2017 Toyota RAV4 Hybrid
2004 Ford Explorer Sport Trac
2012 Gravely ZT XL 48 w/ Kawasaki FR730
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