Is there a way of knowing if a specific engine (2ZR-FXE) is subjected to oil consumption?

If oil is "blowing out via crankcase ventilation," it's still being combusted---at least partially, just like oil that enters the cylinder by other routes. (That's assuming no catch can, of course.)
Mine isn't losing "a bunch of oil" by all routes combined, so there can't possibly be much oil going through the PCV valve.

 

There's a guy on here who has been going through 4 quarts of oil per thousand miles for years and I once did some initial research to see if we could calculate how many tons of carbon emissions that adds up to but was unable to find an valid way to make that calculation. At least yet...

 

It wouldn't be radically different from the carbon emissions from from burning an extra 7 pounds of gasoline per thousand miles---assuming most of the carbon in the consumed oil comes out the tailpipe as CO2.,

 

You got a reference for that?

Complex hydrocarbons are insane when turned into atmospheric gas. Or rather what's the temperature this Summer for you where you live?

As in, it's common knowledge that a gallon of gasoline weighs 6 pounds and after combustion with oxygen you multiply the weight of the carbon times 3.7, which equals 20 pounds of carbon dioxide produced for each gallon of gas.

And a gallon of motor oil weighs more than a gallon of gas, so that level of combustion means even more than 20 pounds of carbon dioxide gas produced... Of course the whole problem I'm trying to get to the bottom of is how much C02 is produced when burning a gallon of motor oil. Still looking for reference for that for the next time the guy who uses 4 quarts of oil per thousand miles posts again about car repair advice that he never listens to.

 

If it isn't burning oil yet you can do regular oil flushes which will stop it burning oil in the future.... 362,000 miles and counting... 10,000 mile oil changes with fully synthetic of any brand I can get cheapest and no oil burning.... Wife's car 242,000 and the same.

Posted via the PriusChat mobile app.

 

What years are the cars manufactured in (low tension rings vs high tension rings), and what is the frequency of oil flushes (every other oil change, every 3rd OC, etc.)?

We have a 2011 at 130k, not burning oil, has had intake manifold to EGR cooler cleaned out at 120K, and OCC installed at the same time cleaning was done. Mostly 10K oil change interval with full synthetic oil, but changed to 5K OC intervals at around 100K.

Do you just add oil flush solvent, run a few minutes, drain old oil, then replace with fresh synthetic oil and done? Or after the flush, do you replace oil with cheap dino oil, run a few days, then drain the dino oil and any remaining solvent, then fill with synthetic? Theoretically, any solvent remaining in the fresh oil in scenario one above would evaporate out at operating temperature, right?

Posted via the PriusChat mobile app.

 

Ct200h and gen 3 prius have the same issues, its the same drivetrain in a tweaked body. The Lexus owners report the same issues if you go into their forums as well. The car consumes most of the oil at the rings only a small % through the pcv system. For oil consumption there is no quick check. About the quickest check is to top the oil off to the top dot on the dipstick and drive down the interstate at 80mph with the cruise control on for about 400 miles and check the oil drop on the dipstick. If its consuming oil it will do it noticeably under these conditions if its an issue.
From the tear downs i've seen they really don't get cylinder or bottom end wear from these 10k oil changes, it just sludges up the rings.
Outside of this though, I'm a firm believer these cars can be reset from oil consumption with a piston soak and making sure to do 5k full syn oil changes from there on out. Piston soak takes a 24 hour period on a weekend and about $5 in e85.

 

I use liquid molly pro engine flush, just add to oil before oil change.. Run for 15 mins and drain away... I do every 2nd or 3rd oil change so 2 or 3 times a yr as I'm doing 60,000 a yr.

Posted via the PriusChat mobile app.

 

Did the piston soak thing on wife's car which was burning a couple of litres between changes, left engine flush in the bores while I went away on holiday... 2 weeks. Came back.. Dropped oil and its cured her oil consumption... Hers now gets done every second change.. But she is a low mileage user so probably done every 10,000 miles

Posted via the PriusChat mobile app.

 

Sorry should have said just drain once and replace... Oil.... No need to be flushing out engine flush chemicals

Posted via the PriusChat mobile app.

 

Based on this TSB, I tried to find out when the changes were made.
https://attachments.priuschat.com/attachment-files/2021/08/209716_T-SB-0168-16_oil_consumption_test.pdf

I've used the VIN numbers of gen 3 Priuses listed at 2 auto auctions and this is what came out of it.
Some VIN numbers are with ****** because I am not registered at this auction.

What i see here....

Regular prius had 0, 1 and 5 in the 11th digit of the VIN in 2013.
Beginning 10/2013 5 is not there anymore.
Beginning 01/2014 there are 0 and 1 left.
In 08/2014 the 2015 model production began with the same digits 0 and 1.
In 11/2015 1 was replaced with 2.

Prius plug-in
I just saved what i've found. There are not many of them listed.

Prius V
In 2013 the 11th digit of the VIN was 3.
From 08/2013 thru 12/2013 the digit was also 3.
In 01/2014 letter J appears.
In 11/2014 the 2015 model production began with letter J only.

My conclusion is:
The Pruis 30 rings and pistons were updated starting 01/2014 with number 1 in the 11th digit of the VIN.
The Prius V rings and pistons were updated starting also 01/2014 with the letter J in the 11th digit of the VIN.

Regular Prius
2013 - D0, D1, D5
2013 TOYOTA PRIUS - JTDKN3DU5D0337259 prod. date 10/12
2013 TOYOTA PRIUS - JTDKN3DUXD1619410 prod. date 10/12
2013 TOYOTA PRIUS - JTDKN3DU4D5546415 prod. date 10/12
* - missing 0 prod. date 11/12
2013 TOYOTA PRIUS - JTDKN3DU1D1729892 prod. date 11/12
2013 TOYOTA PRIUS - JTDKN3DU0D5568105 prod. date 11/12
2013 TOYOTA PRIUS - JTDKN3DU3D0337907 prod. date 12/12
2013 TOYOTA PRIUS - JTDKN3DU0D1639908 prod. date 12/12
2013 TOYOTA PRIUS - JTDKN3DU2D5580420 prod. date 12/12
2013 TOYOTA PRIUS - JTDKN3DU0D0340926 prod. date 01/13
2013 TOYOTA PRIUS - JTDKN3DUXD1646929 prod. date 01/13
2013 TOYOTA PRIUS - JTDKN3DU0D5582909 prod. date 01/13
2013 TOYOTA PRIUS - JTDKN3DU3D0343075 prod. date 02/13
2013 TOYOTA PRIUS - JTDKN3DU1D1656197 prod. date 02/13
2013 TOYOTA PRIUS - JTDKN3DU9D5608861 prod. date 02/13
2013 TOYOTA PRIUS - JTDKN3DUXD0347396 prod. date 03/13
2013 TOYOTA PRIUS - JTDKN3DU4D1668070 prod. date 03/13
2013 TOYOTA PRIUS - JTDKN3DU8D5614862 prod. date 03/13
2013 TOYOTA PRIUS - JTDKN3DU9D0350452 prod. date 04/13
2013 TOYOTA PRIUS - JTDKN3DU6D1674890 prod. date 04/13
2013 TOYOTA PRIUS - JTDKN3DU7D5639154 prod. date 04/13
2013 TOYOTA PRIUS - JTDKN3DU7D0354404 prod. date 05/13
2013 TOYOTA PRIUS - JTDKN3DU4D1683118 prod. date 05/13
2013 TOYOTA PRIUS - JTDKN3DU0D5642431 prod. date 05/13
2013 TOYOTA PRIUS - JTDKN3DU7D0****** prod. date 06/13
2013 TOYOTA PRIUS - JTDKN3DUXD1696794 prod. date 06/13
2013 TOYOTA PRIUS - JTDKN3DU2D5661742 prod. date 06/13
2013 TOYOTA PRIUS - JTDKN3DU1D0****** prod. date 07/13
2013 TOYOTA PRIUS - JTDKN3DU0D1707611 prod. date 07/13
2013 TOYOTA PRIUS - JTDKN3DU1D5666768 prod. date 07/13
* - missing 0 prod. date 08/13
2013 TOYOTA PRIUS - JTDKN3DU6D1719665 prod. date 08/13
2013 TOYOTA PRIUS - JTDKN3DU3D5682664 prod. date 08/13
* - missing 0 prod. date 09/13
2013 TOYOTA PRIUS - JTDKN3DU1D1729892 prod. date 09/13
2013 TOYOTA PRIUS - JTDKN3DU8D5704531 prod. date 09/13

2014 - E1
2014 TOYOTA PRIUS - JTDKN3DU1E1736939 prod. date 10/13
2014 TOYOTA PRIUS - JTDKN3DU0E1751691 prod. date 11/13
2014 TOYOTA PRIUS - JTDKN3DU9E1771969 prod. date 12/13

2014 - E0, E1
2014 TOYOTA PRIUS - JTDKN3DU4E0357049 prod. date 01/14
2014 TOYOTA PRIUS - JTDKN3DU0E1787574 prod. date 01/14
2014 TOYOTA PRIUS - JTDKN3DU1E0363973 prod. date 02/14
2014 TOYOTA PRIUS - JTDKN3DU2E1794915 prod. date 02/14
2014 TOYOTA PRIUS - JTDKN3DU5E0366746 prod. date 03/14
2014 TOYOTA PRIUS - JTDKN3DU2E1813656 prod. date 03/14
2014 TOYOTA PRIUS - JTDKN3DU8E0375635 prod. date 04/14
2014 TOYOTA PRIUS - JTDKN3DU1E1827421 prod. date 04/14
2014 TOYOTA PRIUS - JTDKN3DU2E0381589 prod. date 05/14
2014 TOYOTA PRIUS - JTDKN3DU9E1834410 prod. date 05/14
2014 TOYOTA PRIUS - JTDKN3DU2E0384315 prod. date 06/14
2014 TOYOTA PRIUS - JTDKN3DU5E1839734 prod. date 06/14
2014 TOYOTA PRIUS - JTDKN3DU1E0391014 prod. date 07/14
2014 TOYOTA PRIUS - JTDKN3DU5E1849910 prod. date 07/14

2015 - F0, F1
2015 TOYOTA PRIUS - JTDKN3DU3F0396104 prod. date 08/14
2015 TOYOTA PRIUS - JTDKN3DU3F1872068 prod. date 08/14
2015 TOYOTA PRIUS - JTDKN3DU2F0407030 prod. date 09/14
2015 TOYOTA PRIUS - JTDKN3DU4F1880499 prod. date 09/14
2015 TOYOTA PRIUS - JTDKN3DU9F0417425 prod. date 10/14
2015 TOYOTA PRIUS - JTDKN3DU1F1894134 prod. date 10/14
2015 TOYOTA PRIUS - JTDKN3DU9F0426559 prod. date 11/14
2015 TOYOTA PRIUS - JTDKN3DU9F1902089 prod. date 11/14
2015 TOYOTA PRIUS - JTDKN3DU9F0435407 prod. date 12/14
2015 TOYOTA PRIUS - JTDKN3DU6F1910005 prod. date 12/14
2015 TOYOTA PRIUS - JTDKN3DU6F0438958 prod. date 01/15
2015 TOYOTA PRIUS - JTDKN3DU2F1925438 prod. date 01/15
2015 TOYOTA PRIUS - JTDKN3DU7F0440671 prod. date 02/15
2015 TOYOTA PRIUS - JTDKN3DU9F1931981 prod. date 02/15
2015 TOYOTA PRIUS - JTDKN3DU7F0445451 prod. date 03/15
2015 TOYOTA PRIUS - JTDKN3DU7F1940811 prod. date 03/15
2015 TOYOTA PRIUS - JTDKN3DU6F0449152 prod. date 04/15
2015 TOYOTA PRIUS - JTDKN3DU4F1950633 prod. date 04/15
2015 TOYOTA PRIUS - JTDKN3DU6F0453881 prod. date 05/15
2015 TOYOTA PRIUS - JTDKN3DU2F1959430 prod. date 05/15
2015 TOYOTA PRIUS - JTDKN3DUXF0463300 prod. date 06/15
2015 TOYOTA PRIUS - JTDKN3DU0F1968790 prod. date 06/15
2015 TOYOTA PRIUS - JTDKN3DU2F0469690 prod. date 07/15
2015 TOYOTA PRIUS - JTDKN3DU0F1976498 prod. date 07/15
2015 TOYOTA PRIUS - JTDKN3DU7F0472357 prod. date 08/15
2015 TOYOTA PRIUS - JTDKN3DU1F1979698 prod. date 08/15
2015 TOYOTA PRIUS - JTDKN3DU6F0478117 prod. date 09/15
2015 TOYOTA PRIUS - JTDKN3DU2F1987339 prod. date 09/15
2015 TOYOTA PRIUS - JTDKN3DU7F0481320 prod. date 10/15
2015 TOYOTA PRIUS - JTDKN3DU4F1994938 prod. date 10/15

2015 - F0, F2
2015 TOYOTA PRIUS - JTDKN3DU1F0484519 prod. date 11/15
2015 TOYOTA PRIUS - JTDKN3DU5F0****** prod. date 11/15
2015 TOYOTA PRIUS - JTDKN3DU1F2003950 prod. date 11/15
2015 TOYOTA PRIUS - JTDKN3DU6F2****** prod. date 11/15
2015 TOYOTA PRIUS - JTDKN3DU9F2****** prod. date 11/15

PRIUS PLUG-IN
2013 - 3
2013 TOYOTA PRIUS PLUG-IN - JTDKN3DP0D3043700 prod. date 06/13

2014 - 3
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP3E3049654 prod. date 10/13
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP1E3050222 prod. date 11/13
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP9E3054163 prod. date 12/13
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP9E3058195 prod. date 02/14
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP2E3060371 prod. date 03/14
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP6E3061815 prod. date 04/14
2014 TOYOTA PRIUS PLUG-IN - JTDKN3DP8E3063548 prod. date 06/14

Prius V
2013 - 3
2013 TOYOTA PRIUS V - JTDZN3EU5D3283103 prod. date 07/13

2014 - 3
2014 TOYOTA PRIUS V - JTDZN3EU8E3294923 prod. date 08/13
2014 TOYOTA PRIUS V - JTDZN3EU3E3304922 prod. date 09/13
2014 TOYOTA PRIUS V - JTDZN3EU1E3311383 prod. date 10/13
2014 TOYOTA PRIUS V - JTDZN3EUXE3324259 prod. date 11/13
2014 TOYOTA PRIUS V - JTDZN3EU6E3329037 prod. date 12/13

2014 - 3, J
2014 TOYOTA PRIUS V - JTDZN3EU9E3339822 prod. date 01/14
2014 TOYOTA PRIUS V - JTDZN3EU8EJ001470 prod. date 01/14
2014 TOYOTA PRIUS V - JTDZN3EU5EJ002530 prod. date 02/14
2014 TOYOTA PRIUS V - JTDZN3EU7EJ003209 prod. date 04/14
* - missing prod. date 05/14
2014 TOYOTA PRIUS V - JTDZN3EU4E3357886 prod. date 06/14
2014 TOYOTA PRIUS V - JTDZN3EU6EJ006487 prod. date 06/14
2014 TOYOTA PRIUS V - JTDZN3EU9E3363358 prod. date 07/14
2014 TOYOTA PRIUS V - JTDZN3EU4EJ009081 prod. date 07/14
2014 TOYOTA PRIUS V - JTDZN3EU6E3363723 prod. date 08/14
2014 TOYOTA PRIUS V - JTDZN3EUXEJ011451 prod. date 08/14
2014 TOYOTA PRIUS V - JTDZN3EUXE3****** prod. date 09/14
2014 TOYOTA PRIUS V - JTDZN3EU1EJ011855 prod. date 09/14
2014 TOYOTA PRIUS V - JTDZN3EU6EJ****** prod. date 10/14
2014 TOYOTA PRIUS V - JTDZN3EU6EJ015321 prod. date 11/14 (???, abandoned vehicle, no title)

2015 - J
2015 TOYOTA PRIUS V - JTDZN3EU9FJ017730 prod. date 11/14
2015 TOYOTA PRIUS V - JTDZN3EU8FJ015953 prod. date 11/14
2015 TOYOTA PRIUS V - JTDZN3EU1FJ019004 prod. date 12/14
2015 TOYOTA PRIUS V - JTDZN3EU5FJ024044 prod. date 01/15
2015 TOYOTA PRIUS V - JTDZN3EU4FJ026996 prod. date 02/15
2015 TOYOTA PRIUS V - JTDZN3EU6FJ031083 prod. date 03/15
2015 TOYOTA PRIUS V - JTDZN3EU8FJ033451 prod. date 04/15
2015 TOYOTA PRIUS V - JTDZN3EU7FJ034803 prod. date 05/15
2015 TOYOTA PRIUS V - JTDZN3EUXFJ****** prod. date 06/15
2015 TOYOTA PRIUS V - JTDZN3EU3FJ****** prod. date 07/15

 

You may not be wrong but there can be two ways to be right.

The way I like is using updated tsbs for the change over in production. Every 2010-2013 has low tension rings and early pistons.

Some 2014s have revised pistons and rings. All 2015 and later gen3s have the revised parts. 2017 was the last gen 3 v wagon. 2015 was the last gen3 hatchback.


The hatchbacks and v’s each were built in two different factories. Each factory has its own six digits of sequence numbers.

 

Every 2014 prius hatchback has 0 or 1 in its VIN.
Every 2014 prius wagon has 3 or J in its VIN.
Where's the difference?

 

Different factories each with their own sequence numbers. What you have demonstrated is a manufacturing date of 2/14 is probably updated. To know for sure you use the chart above.

 

If the information of the updated engines is hidden in the last six of the VIN, than those TSBs are useless?

 

If your VIN’s last six digits are higher than those numbers, you’ve got the revised pistons/rings?

 

Got it!
Now i can check 2 priuses i have.
2014 prius V, manuf. on 11/2014. vin JTDZN3EU6EJ015321
Last six of the vin of this prius v is higher than in the TSB which means the rings and pistons are updated.
Another is 2014 prius hatchback, manuf. on 01/2014. vin JTDKN3DU3E0356717
Last six of the vin of this prius is lower than in the TSB which means the rings and pistons are not updated.

 

It looks like 2/14 applies to hatchback too.

Thank you all for helping me figure this out!