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#2803902 - 11/15/12 06:10 PM 0W40 in a 0w20 spec vehicle?
barrysuperhawk Offline


Registered: 01/28/06
Posts: 10
Loc: NoWhere
I just traded cars and switched from a AMG mercedes to a Dodge Dakota. Looking at the spec's for the Dakota [4.7 V8] it asks for 0w20. I happen to have a metric ton of 0W40 Euro spec Mobil1 left over from the mercedes, [like 6+ cases] and all of my oil analysis seems to point to this oil being some of the best Mobil1 makes.

Is there any reason I wouldn't be able to use the 0w40 in place of the 0w20?

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#2803904 - 11/15/12 06:10 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
Yes. You sold it to me for a $ a quart.

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#2803907 - 11/15/12 06:14 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
barrysuperhawk Offline


Registered: 01/28/06
Posts: 10
Loc: NoWhere
Er, cool a fill-in-the-blank problem... Let's say $10...

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#2803909 - 11/15/12 06:15 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
CATERHAM Offline


Registered: 11/18/05
Posts: 10140
Loc: Burlington, Ontario, Canada
If you can get some very light high VI 0W-20 like the Toyota 0W-20 or even better the Sustina 0W-20 and blend it 50/50 to produce a 0W-30, you're still heavier than necessary but not so much.
_________________________
-'74 Lotus Europa, 5W-50
-'86 Porsche 928S, M1 0W-40
-'96 BMW 328i, 50/50 TGMO 0W-20/M1 0W-40
-'94 Caterham 7, FUCHS 0W-20
-'18 Tesla Model 3 - FF diff' oil

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#2803916 - 11/15/12 06:19 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
Originally Posted By: barrysuperhawk
Er, cool a fill-in-the-blank problem... Let's say $10...


Ditto:

Let's say $10 for 6 cases

Seriously, I'm about to buy 5 quarts and a $12 M1 filter for $30 at Pepboys. It'll be SN.

Is your stock even SM?

So we can get 0w40 in non bulk quantities, fresh SN, for less than $4 a quart, and you want to sell in bulk for $10 a quart?

Perhaps this is the same logic that led you to stash 6 cases worth of it.


Edited by MarkStock (11/15/12 06:21 PM)

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#2803919 - 11/15/12 06:22 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
Gabe Offline


Registered: 02/22/11
Posts: 1437
Loc: Indiana
I don't get it.

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#2803927 - 11/15/12 06:30 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
barrysuperhawk Offline


Registered: 01/28/06
Posts: 10
Loc: NoWhere
No, the point was that I DON'T want to sell it, I want to USE it. I just didn't feel like being kind to a smart-alek that seems to have hi-jacked my thread...


I got it recently [within a month] because I didn't know I was going to trade the AMG, and that [censored] thing took 8.5 LITERS per oil change, so 6 cases wasn't really that much..

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#2803936 - 11/15/12 06:34 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
Lead Shoes Offline


Registered: 03/03/10
Posts: 2435
Loc: Mn
Originally Posted By: barrysuperhawk
No, the point was that I DON'T want to sell it, I want to USE it. I just didn't feel like being kind to a smart-alek that seems to have hi-jacked my thread...


That attitude wont get you many serious responses here Cheers2

Either 50/50 the oil with a light 0w20, use it as is, or sell it.


Edited by Brenden (11/15/12 06:36 PM)
_________________________
1999 BMW M3 109k
Castrol 0w40/Mahle
2013 328ix 78k
PP 0w40/Mahle


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#2803937 - 11/15/12 06:35 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
KD0AXS Offline


Registered: 11/13/12
Posts: 2440
Loc: Nowthen, MN
It's not ideal for that engine, but I see no reason it would hurt anything. I say since you have it on hand, you might as well use it rather than let it go to waste.

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#2803948 - 11/15/12 06:39 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
NHGUY Offline


Registered: 10/09/11
Posts: 5041
Loc: USA
Went from a Mercedes to a Dodge Dakota? That should show them Germans!(Daimler once owned Chrysler in a bid to fleece and destroy the company).I would take 5 Dakotas over 1 Mercedes,Dr Z sickens me.

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#2803949 - 11/15/12 06:39 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
IMHO that is awful heavy for a vehicle spec'd for a 20 wt oil; however if earlier versions were 30 weight it might be fine.
_________________________
Thick vs Thin test: 15k / 43k miles complete

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#2803951 - 11/15/12 06:40 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
OtisBlkR1 Offline


Registered: 06/03/09
Posts: 3247
Loc: Indiana
i deffinately wouldnt use the 40wt in cold weather.. in the summer you could blend and get a 30wt that isnt such a big deal.
_________________________
06 Silverado 92,xxx Mobil 5-30
11 Honda Accord 38,xxx Mobil 1
06 Milan 69,000 Mobil 1
12 Ranger 800XP & 14 TRX 450R


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#2803955 - 11/15/12 06:42 PM Re: 0W40 in a 0w20 spec vehicle? [Re: Kuato]
KD0AXS Offline


Registered: 11/13/12
Posts: 2440
Loc: Nowthen, MN
Originally Posted By: Kuato
IMHO that is awful heavy for a vehicle spec'd for a 20 wt oil; however if earlier versions were 30 weight it might be fine.


Yes, they did. We used to have a Grand Cherokee with the 4.7, which called for 5W-30.

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#2803971 - 11/15/12 06:48 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
RiceCake Offline


Registered: 09/22/12
Posts: 1044
Loc: Coldtown, Canada
[censored]... Lets get to actual numbers...

M1 0W-40 is a light 40, your engine more then likely happily ran on 5W-30 years ago and probably still could. A 20 weight would be better for fuel economy though. A 40 weight like a 15W-40 HDEO would be brutal in winter and probably even thicker, but because you're talking about a 0W-40 it would probably be just fine. Short trips though would mean the oil would likely stay very thick, and overall it will be pretty brutal on mileage.

But running M1 0W-40 probably wouldn't damage anything. It would just hamper MPG. I've run 0W-40 in my car before, never made a difference (never checked MPG though).

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#2803981 - 11/15/12 06:51 PM Re: 0W40 in a 0w20 spec vehicle? [Re: barrysuperhawk]
Triple_Se7en Offline


Registered: 12/04/04
Posts: 8751
Loc: 1/2 hr. north of Detroit
Originally Posted By: barrysuperhawk
I just traded cars and switched from a AMG mercedes to a Dodge Dakota. Looking at the spec's for the Dakota [4.7 V8] it asks for 0w20. I happen to have a metric ton of 0W40 Euro spec Mobil1 left over from the mercedes, [like 6+ cases] and all of my oil analysis seems to point to this oil being some of the best Mobil1 makes.

Is there any reason I wouldn't be able to use the 0w40 in place of the 0w20?


Your location is listed as ""NoWhere"

Are we supposed to guess as to whether you live in a warm climate or cold climate?

Climate does make a difference with this topic.

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