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#4451585 - 07/06/17 06:05 PM 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles
The Critic Offline


Registered: 08/30/04
Posts: 19806
Loc: CA
This is an oil analysis report from my daily driver. The driving style was about 50/50 city/highway most city trips are about 10 miles in length and are at higher speeds (>40 mph), so the gas engine is running.

This car has only seen synthetic oil from day 1; all oil changes except 1 or 2 have been with 0W-20. For the first 90k miles, I followed the OEM specified 10K intervals but noticed that the oil started to get extremely dark as the engine aged. Since then, I have scaled back to 5K intervals.

Total time on this oil was about 3 months. This was Eneos 0W-20 from WorldPac with a Genuine Toyota oil filter. There was no oil consumption.

***
Miles on Oil: 5,018
Total Miles on Unit: 153,364
Sample Date: 6/27/17
Make Up Oil Added: 0 qts

Aluminum: 3
Chromium: 0
Iron: 4
Copper: 0
Lead: 0
Tin: 0
Molybdenum: 162
Nickel: 0
Manganese: 0
Silver: 0
Titanium: 0
Potassium: 1
Boron: 51
Silicon: 7
Sodium: 3
Calcium: 1915
Magnesium: 102
Phosphorus: 679
Zinc: 802
Barium: 0

SUS Viscosity @ 210F: 50.2
cSt Viscosity @ 100C: 7.33
Flashpoint in F: 400
Fuel %: <0.5
Antifreeze %: 0
Water %: 0
Insolubles %: 0.2
TBN: 4.1
_________________________
2011 Toyota Prius - 168k - ServicePro Dexos 0W-20
2007 Honda Accord 2.4 - 128K - Idemitsu 5W-20

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#4451612 - 07/06/17 06:31 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
CT8 Offline


Registered: 10/09/14
Posts: 10984
Loc: Idaho
Why use syn For your oil change intervals?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4451615 - 07/06/17 06:33 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
JimPghPA Offline


Registered: 08/22/09
Posts: 3859
Loc: Pittsburgh,PA U.S.A.
25,560 miles a year is a great application for a hybrid. Hybrids save a lot of cash in high millage applications.
_________________________
Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa


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#4451620 - 07/06/17 06:36 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: CT8]
The Critic Offline


Registered: 08/30/04
Posts: 19806
Loc: CA
Originally Posted By: CT8
Why use syn For your oil change intervals?


0W-20 synthetic is the OEM specified oil. You should always use the specified oil, even if you reduce the service interval.
_________________________
2011 Toyota Prius - 168k - ServicePro Dexos 0W-20
2007 Honda Accord 2.4 - 128K - Idemitsu 5W-20

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#4451645 - 07/06/17 07:06 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
MobilinHyundia Offline


Registered: 09/27/10
Posts: 366
Loc: Ontario, Canada
Originally Posted By: The Critic
Originally Posted By: CT8
Why use syn For your oil change intervals?


0W-20 synthetic is the OEM specified oil. You should always use the specified oil, even if you reduce the service interval.


Iaw, Just a wasted of a good oil.

That is it, people come here to learn about oil but if the old timers (19000 posts) do the same as somebody who know nothing about oil changes,
What is the point of this forum?
Im been here many years so it was all a wasted of time!
_________________________
2009 Sonata GL 2.4L (226000km)-QS FS 5W20 ,OEM oil filter
2009 Sonata LTD 2.4L (170000km)Castrol Egde 5W20, RP filter

24000km/15000 mile oci so far

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#4451666 - 07/06/17 07:41 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
Koz1 Offline


Registered: 03/05/11
Posts: 692
Loc: Ont Canada
With the wear you have I would try 7500 cause you have almost no wear. No joke. 10k just might have been good.
Has your engine computer ever been reset? Like disconnect the negative and turn on the lights drain the system reconnect so it resets?
With that TBN its really early to dump it.
_________________________
Currently using, Fuchs TITAN GT1 PRO FLEX 5W-30, M1 5W-20 and Castrol Edge 0W-20 Gold B.

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#4451690 - 07/06/17 08:10 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
Shannow Offline


Registered: 12/12/02
Posts: 39871
Loc: 'Stralia
>15% KV100 loss...

So much for the "0w20s never shear" argument.

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#4451761 - 07/06/17 09:22 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1227
Loc: Oregon
Nice report. Probably could have gone longer but no harm in changing it early.
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4451783 - 07/06/17 09:36 PM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: The Critic]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
Metal numbers are low. So much for high wear with 0-20 oil.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4451994 - 07/07/17 05:59 AM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: tig1]
Rolla07 Offline


Registered: 11/05/11
Posts: 4737
Loc: MTL, CANADA
Originally Posted By: tig1
Metal numbers are low. So much for high wear with 0-20 oil.


Yep.

Not sure why people are being critical, I use full syn for 5k mile intervals also. I dont find it a waste. Everyone has their opinion on this site and thats what makes it good.
_________________________
2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967


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#4452254 - 07/07/17 11:19 AM Re: 2011 Prius, Eneos 0W-20 Synthetic, 5,018 miles [Re: tig1]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1227
Loc: Oregon
Originally Posted By: tig1
Metal numbers are low. So much for high wear with 0-20 oil.


Well, context matters here. A low power Prius engine certainly has lower film strength (HTHS) requirements so 0W-20 works fine. Not so much for other engines.
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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