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#3145098 - 10/04/13 03:39 PM Whos using 15W40?
Realtech214 Offline


Registered: 02/01/13
Posts: 688
Loc: Florida
In their daily driver that say calls for 5w30 ... I know your out there! popcorn2
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#3145102 - 10/04/13 03:41 PM Re: Whos using 15W40? [Re: Realtech214]
Miller88 Online   content


Registered: 04/09/08
Posts: 11784
Loc: Onondaga County
My Cherokee calls for 5/10w-30 , I use 5w-40.

15w40 would be a strong contender if it didn't get so cold in ny in the winters.
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#3145129 - 10/04/13 04:06 PM Re: Whos using 15W40? [Re: Realtech214]
panthermike Offline


Registered: 04/01/08
Posts: 3281
Loc: Phoenix, AZ
Not my vehicle but I regularly put 15w40 in my brother's Lancer that calls for 5w30. It runs the same with either weight, but his car has a little under 200K and is starting to use more and more oil as the miles accumulate.
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#3145134 - 10/04/13 04:13 PM Re: Whos using 15W40? [Re: Realtech214]
Cristobal Offline


Registered: 01/02/11
Posts: 2378
Loc: Between PYB and Red Line
I have used it many times. In the stash I have a gallon of 15W-40 NAPA oil I got on sale for maybe $8.00 a while back. It is SL, and I think next summer I will use it.
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#3145168 - 10/04/13 04:35 PM Re: Whos using 15W40? [Re: Realtech214]
cancov Offline


Registered: 06/13/11
Posts: 738
Loc: North Carolina
Rotella Delvac 15W40 in the '86 B2000. My daily driver that spec's a wide range. I also top off the '02 Maxima with the same Delvac since it is consuming large amounts of oil. It spec's 5W30.
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#3145174 - 10/04/13 04:39 PM Re: Whos using 15W40? [Re: Realtech214]
Zaedock Offline


Registered: 09/10/05
Posts: 3918
Loc: Massachusetts
I have used it and SAE30 in everything when I grabbed 40+/- gallons during the $.99/gal clearance of '05/'06.
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#3145185 - 10/04/13 04:46 PM Re: Whos using 15W40? [Re: Realtech214]
Donald Offline


Registered: 03/21/04
Posts: 18005
Loc: Upstate NY
Its in my diesel Bobcat.
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#3145188 - 10/04/13 04:47 PM Re: Whos using 15W40? [Re: Realtech214]
Shannow Offline


Registered: 12/12/02
Posts: 34941
Loc: Oz
My L67 calls for 20W-50, and 15W-40 in "cold" environments. In the States, it calls for 5W-30...

So I've got around 50:50 15W-40 (Delo GOld Ultra), and 5W-30 Synthetic (Caltex C3).

So I'm way thinner than my Oz manual, and thicker than the US norm.

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#3145248 - 10/04/13 05:30 PM Re: Whos using 15W40? [Re: Zaedock]
bullwinkle Online   confused


Registered: 10/09/04
Posts: 6288
Loc: Cincinnati, OH, USA
Originally Posted By: Zaedock
I have used it and SAE30 in everything when I grabbed 40+/- gallons during the $.99/gal clearance of '05/'06.
Me too-I use the Delvac 1300 15W40 in the boat, and still have 5 or 6 gallons of 99 cent/gallon Delo 400 straight 30 that I'm going to have to use before the jugs start leaking.
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#3145284 - 10/04/13 06:07 PM Re: Whos using 15W40? [Re: Realtech214]
The_Jed Offline


Registered: 03/24/13
Posts: 46
Loc: Pekin, IL
I used Rotella 15w40 in my '94 F150's 300 six.
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#3145287 - 10/04/13 06:10 PM Re: Whos using 15W40? [Re: bullwinkle]
Zaedock Offline


Registered: 09/10/05
Posts: 3918
Loc: Massachusetts
Originally Posted By: bullwinkle
Originally Posted By: Zaedock
I have used it and SAE30 in everything when I grabbed 40+/- gallons during the $.99/gal clearance of '05/'06.
Me too-I use the Delvac 1300 15W40 in the boat, and still have 5 or 6 gallons of 99 cent/gallon Delo 400 straight 30 that I'm going to have to use before the jugs start leaking.


I keep my jugs in the basement, so they're still in awesome shape. I use the SAE30 in my compressors too!
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1992 YJ "The Heep"/2004 Malibu Maxx LT
1975 Ford Bronco/1959 Willys CJ5/20XX Custom rock crawler

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#3146532 - 10/06/13 07:15 AM Re: Whos using 15W40? [Re: Realtech214]
GSCJR Offline


Registered: 01/20/13
Posts: 997
Loc: Ontario, Canada
Running it in my 1996 SL2 that specs 5w-30
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#3146536 - 10/06/13 07:18 AM Re: Whos using 15W40? [Re: Zaedock]
Ducked Offline


Registered: 10/25/12
Posts: 1937
Loc: Taiwan
Delvac 15w40 MX, in a 1986 Daihatsu Charade. Prior to that I used straight 40 weight (Delvac or CPC), which I still use for top off, and in my motorcycle gearbox.

I'm not much worried that its too heavy (it gets pretty hot here), but I am concerned about the lowered zinc levels in the MX.

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#3147202 - 10/06/13 07:45 PM Re: Whos using 15W40? [Re: Cristobal]
Phishin Online   content


Registered: 05/01/12
Posts: 2184
Loc: Indiana
Originally Posted By: Cristobal
I have used it many times. In the stash I have a gallon of 15W-40 NAPA oil I got on sale for maybe $8.00 a while back. It is SL, and I think next summer I will use it.


I bought 8 gallons of the same oil (black container) last year at $8.99/gallon. I run it in my old 1990 Chevy truck that has 350 TBI with flat tappets, and I plan to run it my boat this fall...a 36' Tiara with twin 454's (carbed and flat tappets as well).
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#3149433 - 10/08/13 04:47 PM Re: Whos using 15W40? [Re: Realtech214]
jayg Offline


Registered: 10/04/12
Posts: 1053
Loc: Talkeetna, AK
My Vans owners manual states I can run SAE 30 or 15W40 depending on operating temps. I'm going to keep 15W40 Delo or Rotella in it since it's a diesel 1 ton capacity van.

You dont need it in a Honda or whatever that is calling for 5w30.
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