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#4438034 - 06/21/17 10:05 PM Using 5w instead of 10w
Nissan101 Offline


Registered: 08/13/15
Posts: 415
Loc: Caribbean
Goodnight all
My car manual states either 10w or 20w, would there be any problems using a 5w40 instead of a 10w40. No negativity.
Would 5w be too thin at start up?

Climate, my climate is so warm 20w flows like water laugh
Reason i ask too, is that i can get some 5w40 oil at a great price.
_________________________
Nissan N16 -10w30
Nissan S13 -20w50

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#4438037 - 06/21/17 10:06 PM Re: Using 5w instead of 10w [Re: Nissan101]
CT8 Offline


Registered: 10/09/14
Posts: 10922
Loc: Idaho
It will work.
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#4438047 - 06/21/17 10:21 PM Re: Using 5w instead of 10w [Re: Nissan101]
Gokhan Offline


Registered: 12/29/10
Posts: 2987
Loc: Los Angeles, California
No oil is too thin at cold startup. To put it more accurately, every oil is too thick at cold startup.

5W-40 is very similar to 10W-40 in terms of viscosity. It's also synthetic; so, you get the added benefits of a synthetic.
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Mobil 1 EP M1-103 filter, 90430-12031 drain gasket

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#4438055 - 06/21/17 10:30 PM Re: Using 5w instead of 10w [Re: Nissan101]
dblshock Offline


Registered: 04/24/07
Posts: 2649
Loc: WI.
go for a good 5/40, it's the perfect grade.


Edited by dblshock (06/21/17 10:31 PM)
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#4438059 - 06/21/17 10:35 PM Re: Using 5w instead of 10w [Re: dblshock]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4020
Loc: North Carolina
Originally Posted By: dblshock
go for a good 5/40 0W-40, it's the perfect grade.

Fixed that for you.
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#4438060 - 06/21/17 10:36 PM Re: Using 5w instead of 10w [Re: Gokhan]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Gokhan
No oil is too thin at cold startup. To put it more accurately, every oil is too thick at cold startup. 5W-40 is very similar to 10W-40 in terms of viscosity. It's also synthetic; so, you get the added benefits of a synthetic.


Exactly, it should be very good oil.

Is it Shell Rotella T6? Chevron Delo?
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#4438090 - 06/21/17 11:07 PM Re: Using 5w instead of 10w [Re: Nissan101]
Chewie Offline


Registered: 10/08/15
Posts: 228
Loc: OH
The 5W and 10W will be around the same viscosity at the ambient temps you see in the Caribbean. The difference between them only becomes apparent at ambient temps well below freezing.
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2002 Lexus GS300 | 2JZ-GE | M1 HM 10W-40 | XG3600

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#4438132 - 06/22/17 12:41 AM Re: Using 5w instead of 10w [Re: Nissan101]
BrocLuno Offline


Registered: 09/06/15
Posts: 5506
Loc: Kalifornia Kollective
There you go. Most of the above replies do not apply in your environment. If 5W-40 is readily available and the right price, it won't hurt anything.

All cool oils, be they 0W, 5W, or 10W are many times thicker than the 40 is at op temp. But, I have to ask, since you will never see freezing of any kind, why not just run SAE 30 HD or SAE 40 HD and be happy to not have any VII's at all smile

See this thread for discussion: https://bobistheoilguy.com/forums/ubbthreads.php/topics/4096620/1 smile


Edited by BrocLuno (06/22/17 12:43 AM)
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#4438183 - 06/22/17 05:28 AM Re: Using 5w instead of 10w [Re: Nissan101]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1654
Loc: Crawfordville FL
The 5w will work fine. For your climate I would also consider a 10w-30
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2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4438490 - 06/22/17 12:11 PM Re: Using 5w instead of 10w [Re: Nissan101]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3395
Loc: Columbus,Nebraska
Originally Posted By: Nissan101
Goodnight all
My car manual states either 10w or 20w, would there be any problems using a 5w40 instead of a 10w40. No negativity.
Would 5w be too thin at start up?

Climate, my climate is so warm 20w flows like water laugh
Reason i ask too, is that i can get some 5w40 oil at a great price.
No oil on the shelf is too low viscosity at start up.

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