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Oil for Heavily Used Carbureted Veichles #4471878
07/27/17 11:22 AM
07/27/17 11:22 AM
Joined: Jul 2017
Posts: 4
Portland, Or
RamblinMan1990 Offline OP
RamblinMan1990  Offline OP
Joined: Jul 2017
Posts: 4
Portland, Or
I have a 1977 GMC Wrecker with a 454 I use daily for towing cars,and a 1982 ford f150 with a 300 six.I was wondering if it was worth it to switch to Mystique 15w50.

Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471886
07/27/17 11:28 AM
07/27/17 11:28 AM
Joined: Dec 2004
Posts: 426
Dayton,Ohio
ShotGun429 Offline
ShotGun429  Offline
Joined: Dec 2004
Posts: 426
Dayton,Ohio
15w-50 or 20w-50 wont hurt a thing. Im a engine rebuilder here. I see it all.

Re: Oil for Heavily Used Carbureted Veichles [Re: ShotGun429] #4471896
07/27/17 11:35 AM
07/27/17 11:35 AM
Joined: Jul 2017
Posts: 4
Portland, Or
RamblinMan1990 Offline OP
RamblinMan1990  Offline OP
Joined: Jul 2017
Posts: 4
Portland, Or
I'm currently using 15w40.

Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471903
07/27/17 11:47 AM
07/27/17 11:47 AM
Joined: Sep 2005
Posts: 14,333
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,333
Canada
I think a bulk 15W-40 would work well. It would (probably) be cheaper, and it will protect hard-working engines well.

I'd stay the course with that.


2010 Kia Soul 2U - 2.0L I-4, auto; 132k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Oil for Heavily Used Carbureted Veichles [Re: addyguy] #4471918
07/27/17 12:07 PM
07/27/17 12:07 PM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
Originally Posted By: addyguy
I think a bulk 15W-40 would work well. It would (probably) be cheaper, and it will protect hard-working engines well.

I'd stay the course with that.


+1 I think this would be perfect. You can get a solid HD 15w-40 that will protect your engine and also give you longer oil changes


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471931
07/27/17 12:26 PM
07/27/17 12:26 PM
Joined: Oct 2015
Posts: 2,660
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,660
Balearic Islands , Spain
A good 15W-40 HDEO like Shell Rotella, these mixed fleet oils are very tough and work well in old carbed engines.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471960
07/27/17 12:50 PM
07/27/17 12:50 PM
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
stick with the 15w40... I dont think there are any bad ones.


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
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471961
07/27/17 12:51 PM
07/27/17 12:51 PM
Joined: Sep 2003
Posts: 3,132
Austin, Texas
Brons2 Offline
Brons2  Offline
Joined: Sep 2003
Posts: 3,132
Austin, Texas
OTOH, if you are able to score some 20w50 on sale cheap, I wouldn't hesitate to run it. But most of the time it's easier to find 15w40 on sale. I would run either.

I grew up in Corvallis and worked in an auto & machine shop there when I was in high school and we used NAPA 20w50 in every domestic V8 that came in the shop in the 80s, including in the coldest days of winter. I think we used 10w30 in the imports, but there were a lot less of those.


2012 Hyundai Sonata GLS 6MT 2.4GDI, ProDS 10w30, XG9688 filter, 2018 Mitsubishi Outlander SEL 2.4 CVT, Factory fill still.
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471964
07/27/17 12:56 PM
07/27/17 12:56 PM
Joined: Jul 2017
Posts: 4
Portland, Or
RamblinMan1990 Offline OP
RamblinMan1990  Offline OP
Joined: Jul 2017
Posts: 4
Portland, Or
Well I think rotella will serve me fine then, thanks guys.

Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471965
07/27/17 01:03 PM
07/27/17 01:03 PM
Joined: Sep 2005
Posts: 14,333
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,333
Canada
Would love to see a pic of the old '77 wrecker - not many oldies like that still working!


2010 Kia Soul 2U - 2.0L I-4, auto; 132k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471978
07/27/17 01:15 PM
07/27/17 01:15 PM
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
Originally Posted By: RamblinMan1990
I'm currently using 15w40.


Prolly good enough smile

That's what I'd run. HDEO can stand the heat and some fuel dilution. I'd use a known one, but PQIA shows that they are all pretty much good. Delvac, Delo, Rotella, Rural King, TSC (Traveler), all good 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: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471999
07/27/17 01:32 PM
07/27/17 01:32 PM
Joined: Jul 2017
Posts: 4
Portland, Or
RamblinMan1990 Offline OP
RamblinMan1990  Offline OP
Joined: Jul 2017
Posts: 4
Portland, Or
15w50 syn blend mystique is on sale at O'Reilly for $25 for 2 gallons.

Re: Oil for Heavily Used Carbureted Veichles [Re: Brons2] #4472015
07/27/17 01:44 PM
07/27/17 01:44 PM
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
Originally Posted By: Brons2


I grew up in Corvallis and worked in an auto & machine shop there when I was in high school and we used NAPA 20w50 in every domestic V8 that came in the shop in the 80s, including in the coldest days of winter. I think we used 10w30 in the imports, but there were a lot less of those.
we did the opposite! Imports got 20w50 and v8s got 10w30 or 10w40


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
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4472040
07/27/17 02:04 PM
07/27/17 02:04 PM
Joined: Dec 2016
Posts: 6,251
Waco, TX
Linctex Online content
Linctex  Online Content
Joined: Dec 2016
Posts: 6,251
Waco, TX
15W-40 in my 1995 K3500 454 Dually 4WD (7.4 TBI) 272,000 miles on 'er, still original.


"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: Oil for Heavily Used Carbureted Veichles [Re: Chris142] #4472100
07/27/17 03:01 PM
07/27/17 03:01 PM
Joined: Nov 2007
Posts: 1,449
New Jersey
Rock_Hudstone Offline
Rock_Hudstone  Offline
Joined: Nov 2007
Posts: 1,449
New Jersey
Originally Posted By: Chris142
stick with the 15w40... I dont think there are any bad ones.

Well, the new CK-4, SN versions are way down on Zn/Ph levels, not exactly good news for older flat tappet engines.

I'd stay with T4 15w-40 Shell Rotella, it still has the higher levels of Zn/Ph and dropped SN rating.


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