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Oil for Heavily Used Carbureted Veichles #4471878
07/27/17 10:22 AM
07/27/17 10:22 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 10:28 AM
07/27/17 10:28 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 10:35 AM
07/27/17 10:35 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 10:47 AM
07/27/17 10:47 AM
Joined: Sep 2005
Posts: 14,360
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,360
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; 137k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Oil for Heavily Used Carbureted Veichles [Re: addyguy] #4471918
07/27/17 11:07 AM
07/27/17 11:07 AM
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 11:26 AM
07/27/17 11:26 AM
Joined: Oct 2015
Posts: 2,798
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,798
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.

Finnish expat in Spain.
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471960
07/27/17 11:50 AM
07/27/17 11:50 AM
Joined: Jun 2003
Posts: 17,814
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,814
Deplorable in apple valley, ca
stick with the 15w40... I dont think there are any bad ones.


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 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 11:51 AM
07/27/17 11:51 AM
Joined: Sep 2003
Posts: 3,135
Austin, Texas
Brons2 Offline
Brons2  Offline
Joined: Sep 2003
Posts: 3,135
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 11:56 AM
07/27/17 11:56 AM
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 12:03 PM
07/27/17 12:03 PM
Joined: Sep 2005
Posts: 14,360
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,360
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; 137k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Oil for Heavily Used Carbureted Veichles [Re: RamblinMan1990] #4471978
07/27/17 12:15 PM
07/27/17 12:15 PM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
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 12:32 PM
07/27/17 12:32 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 12:44 PM
07/27/17 12:44 PM
Joined: Jun 2003
Posts: 17,814
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,814
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 carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 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 01:04 PM
07/27/17 01:04 PM
Joined: Dec 2016
Posts: 7,143
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,143
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 02:01 PM
07/27/17 02:01 PM
Joined: Nov 2007
Posts: 1,466
New Jersey
Rock_Hudstone Offline
Rock_Hudstone  Offline
Joined: Nov 2007
Posts: 1,466
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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