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#4492959 - 08/19/17 04:15 PM Which one is best?
kpatter Offline


Registered: 08/26/11
Posts: 60
Loc: texas
Converting to synthetic and Walmart is out of 5W30 EP in my area (not interested in the annual protection due to costs) - owners manual says I can use 10W30 or 10W40 (wally has both of these in stock EP) as long as the ambient temperature is above 0. I live in Dallas and the winters are very mild.

Is one of these a better idea than the other given where I live?

2004 Nissan Frontier
125K
KA24DE ending
Diet of 5W30 dino supertech since new



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#4492962 - 08/19/17 04:16 PM Re: Which one is best? [Re: kpatter]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
Either.
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Thick vs Thin test: 15k / 43k miles complete

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#4492964 - 08/19/17 04:18 PM Re: Which one is best? [Re: kpatter]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Why not just use a different 5w30? NAPA has M1 5w30 on sale right now for $5.79/qt and there is a mail-in rebate. I see no strong reason to use a 10w30 or 10w40.
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2017 Chevrolet Corvette Grand Sport

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#4492984 - 08/19/17 04:35 PM Re: Which one is best? [Re: kpatter]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18183
Loc: Dallas,Tx USA
I'd go with 5W30 Pennzoil Platinum. 5 quart jug is on rollback for $22.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4492986 - 08/19/17 04:37 PM Re: Which one is best? [Re: kpatter]
kpatter Offline


Registered: 08/26/11
Posts: 60
Loc: texas
The EP is supposedly good for 15k miles..

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#4492994 - 08/19/17 04:45 PM Re: Which one is best? [Re: kpatter]
Trav Offline


Registered: 11/20/06
Posts: 18911
Loc: MA, Mittelfranken.de
Given your location I would use thee 10w30, its not to be much if any different from the 5w30 in your climate. I really like 0w and 5w40 oils but I cant get past the bad rap 10w40 had for decades, I wont use it but that's me.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4492998 - 08/19/17 04:49 PM Re: Which one is best? [Re: kpatter]
BrocLuno Offline


Registered: 09/06/15
Posts: 5528
Loc: Kalifornia Kollective
In the world of synthetic oils, Redline and Motul 300V are about as good as it gets. The other stuff, well it's kinda just that, the other stuff ...


Edited by BrocLuno (08/19/17 04:49 PM)
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4493000 - 08/19/17 04:50 PM Re: Which one is best? [Re: kpatter]
Warstud Offline


Registered: 09/02/05
Posts: 5414
Loc: MIchigan
Try some Magnatec 10w30. It comes in both synthetic and semi-synthetic. I've used the semi-synthetic in my truck and it makes it run and drive like new again.

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#4493001 - 08/19/17 04:51 PM Re: Which one is best? [Re: kpatter]
danez_yoda Offline


Registered: 07/18/09
Posts: 471
Loc: texas
Try some Magnetec 5w30. My Tacoma V6 4.0L LOVES this stuff. Sounds smoother than PP or Valvaline Synpower. my new go to.

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#4493005 - 08/19/17 05:03 PM Re: Which one is best? [Re: kpatter]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1665
Loc: Crawfordville FL
Originally Posted By: kpatter
Converting to synthetic and Walmart is out of 5W30 EP in my area (not interested in the annual protection due to costs) - owners manual says I can use 10W30 or 10W40 (wally has both of these in stock EP) as long as the ambient temperature is above 0. I live in Dallas and the winters are very mild.

Is one of these a better idea than the other given where I live?

2004 Nissan Frontier
125K
KA24DE ending
Diet of 5W30 dino supertech since new




10w30 is fine.
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4493016 - 08/19/17 05:08 PM Re: Which one is best? [Re: kpatter]
shrooms Offline


Registered: 01/26/10
Posts: 844
Loc: NEPA
_________________________
2002 Mazda MPV. PUP 5W20, Fram XG2, Dex VI
2001 Honda Civic HX. M1 EP 5W20, Fram XG3717

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#4493019 - 08/19/17 05:10 PM Re: Which one is best? [Re: kpatter]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
There's a lot of temperature charts out there that say 5W-30 is no good above 60*F.

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#4493024 - 08/19/17 05:21 PM Re: Which one is best? [Re: kpatter]
MoneyJohn Offline


Registered: 03/01/12
Posts: 173
Loc: Southern NY
I assume you have taken into account possibility of leakage?
I have heard over and over and over, if high mileage vehicle (more than 75K) is converted to synthetic, it will clean up the engine well, opening up the leaks otherwise covered by the sludge or whatever debris there is. That is the sole reason I am not changing my 2006 Sentra with 103K on the odometer to synthetic and using synthetic blend instead.
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2015 Subaru Forester 2.5i Premium w/ EyeSight
2006 Nissan Sentra 1.8S Special Edition

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#4493042 - 08/19/17 05:41 PM Re: Which one is best? [Re: Merkava_4]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1665
Loc: Crawfordville FL
Originally Posted By: Merkava_4
There's a lot of temperature charts out there that say 5W-30 is no good above 60*F.


Very old data. You can run 5w-30 in 100 degree ambient no problem
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4493051 - 08/19/17 05:51 PM Re: Which one is best? [Re: SilverFusion2010]
PimTac Offline


Registered: 03/04/17
Posts: 4346
Loc: Soviet State of Washington
Originally Posted By: SilverFusion2010
Originally Posted By: Merkava_4
There's a lot of temperature charts out there that say 5W-30 is no good above 60*F.


Very old data. You can run 5w-30 in 100 degree ambient no problem



I ran a Mitsubishi Montero Sport on 5w-30 through the Mojave desert at 116F. No problems. Old data for sure.
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2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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