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#4596493 - 12/06/17 08:14 PM Running 0w-30 vs 5w-30
Kenwood Offline


Registered: 12/05/17
Posts: 3
Loc: KS
I have a 2000 Toyota Avalon with 140k miles that calls for 5w-30 oil and am considering running ow-30 at the next oil change in hopes of a slight mpg increase. Is there any advantages or disadvantages to switching? I have been reading a few of these oil threads and the knowledge you guys have of oil is impressive.

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#4596499 - 12/06/17 08:19 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
danez_yoda Offline


Registered: 07/18/09
Posts: 464
Loc: texas
Will be fine.

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#4596508 - 12/06/17 08:22 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
BrocLuno Offline


Registered: 09/06/15
Posts: 5519
Loc: Kalifornia Kollective
Of the two, I'd take the 0W-XX anytime. Better chemistry and better anti-shear stability smile
_________________________
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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#4596510 - 12/06/17 08:23 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2569
Loc: MN
Thats an older car. I'd use a "High Mileage" oil, 5w30 full synthetic in it. Any brand at walmart really. There isn't much difference in flow between a 5w30 and the Mobil1 AFE 0w30 oil.
High Mileage oils keep the seals flexible better so they are less likely to leak.

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#4596512 - 12/06/17 08:23 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
SatinSilver Offline


Registered: 01/24/08
Posts: 10172
Loc: OH
Which 0w30 were you considering? I'd go for it if I could find one at Walmart for the same price as 5w30. Otherwise, I'd stick to the 5w30.

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#4596524 - 12/06/17 08:30 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
PimTac Offline


Registered: 03/04/17
Posts: 4315
Loc: Soviet State of Washington
You should be able to run the 0w-30 but donít expect any fuel economy gains. If there are any gains they would be too small to measure. Driving style, proper tire inflation and a well maintained engine will do far more for fuel economy.
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4596538 - 12/06/17 08:38 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Kenwood
in hopes of a slight mpg increase.


Prepare to be disappointed.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4596621 - 12/06/17 09:41 PM Re: Running 0w-30 vs 5w-30 [Re: Linctex]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2754
Loc: Wet side WA
Originally Posted By: Linctex
Originally Posted By: Kenwood
in hopes of a slight mpg increase.


Prepare to be disappointed.



thumbsup
_________________________
2004 Toyota Corolla 121758
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4596647 - 12/06/17 10:16 PM Re: Running 0w-30 vs 5w-30 [Re: PimTac]
Rolla07 Offline


Registered: 11/05/11
Posts: 4737
Loc: MTL, CANADA
Originally Posted By: PimTac
You should be able to run the 0w-30 but donít expect any fuel economy gains. If there are any gains they would be too small to measure. Driving style, proper tire inflation and a well maintained engine will do far more for fuel economy.


+1
_________________________
2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967


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#4596702 - 12/07/17 12:06 AM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1227
Loc: Oregon
Generally a 0W-30 will be a higher quality base oil for a given specification over 5W-30, as it must meet tougher cold temperature tests. This is part of the reason why they cost more.


Edited by 1JZ_E46 (12/07/17 12:07 AM)
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4596721 - 12/07/17 01:04 AM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
THafeez Offline


Registered: 08/15/16
Posts: 651
Loc: New Jersey
I'm running it and it's fine. MPG will vary with every car. Cold starts are very smooth and the oil level hasn't moved in my oil burner.
_________________________
2004 Toyota Solara SE 2.4 2AZFE
175,000 miles
Valvoline Synpower Maxlife 5W30
Royal Purple 20-400 oversize

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#4596764 - 12/07/17 04:52 AM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
harry j Offline


Registered: 12/16/05
Posts: 1569
Loc: Wilmington, NC
0W-30 is the best option.

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#4596806 - 12/07/17 07:08 AM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Originally Posted By: Kenwood
I have a 2000 Toyota Avalon with 140k miles that calls for 5w-30 oil and am considering running ow-30 at the next oil change in hopes of a slight mpg increase. Is there any advantages or disadvantages to switching? I have been reading a few of these oil threads and the knowledge you guys have of oil is impressive.


Hi Kenwood, unless you're doing a lot of really short tripping with long cooldowns between trips you might see a little gas mileage benefit from using an XW30 that has a low viscosity for its grade at operating temperature (~100C for many gas vehicles).
There has been a lot of discussion here about recent changes in many oil formulations to meet dexos1 Gen 2 specs (GM standard for which most mass market oils are going to want to have a license) and we noticed that the last Pennzoil Platinum 5W30 has a lower viscosity at 100C (9.8 cSt) than, say, Mobil 1 5W30 (11 cSt). I would think that PP is still going to do a good job of protecting your engine and the 5W30 might result in better fuel economy than many of its competitors if you are making reasonably long trips where the engine is mostly warmed up.
Not a Pennzoil fanboy here, I have never used it in my vehicle but did just put some PP 0W20 in my daughter's Impreza.
If you end up doing a lot of really cold starts (like way below zero) where the engine has truly gotten down to the ambient temperature, I could see the 0W30 having some effect upon mileage compared to a 5W30 with a similar operating temp viscosity. But, I honestly doubt many people would see a gas mileage benefit from using a typical 0W30 vs. a 5W30 even in winter.
Just my two cents worth and welcome to BITOG!
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

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#4596963 - 12/07/17 09:37 AM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
Kenwood Offline


Registered: 12/05/17
Posts: 3
Loc: KS
I am currently running Mobil 1 HM 5w30 and just changed it a couple weeks ago. I didn't figure there would be much of a mpg increase but any little bit would be good. I won't likely change the oil again until late spring comes around and I thought 5w30 may be better in the warm months of the year and 0w30 for the winter months. I only drive about 6k miles a year in this car so I will likely change the oil every 6 months or so. Thank you everyone for your responses.

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#4599390 - 12/09/17 09:07 PM Re: Running 0w-30 vs 5w-30 [Re: Kenwood]
harry j Offline


Registered: 12/16/05
Posts: 1569
Loc: Wilmington, NC
0W-30 is good year round. I have been Using 0W-30 in my 1993 Civic since it had 118,000 miles,

Now with 488,000 miles on the clock I can highly recommend this oil.

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