2nd Gen Prius Oil Consumption and Preventative maintenance Suggestion....

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Kaptainkid1, Mar 27, 2019.

  1. Mendel Leisk

    Mendel Leisk Sand Pounder

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    A cup between oil changes? You've got it beat. (y)
     
  2. edthefox5

    edthefox5 Senior Member

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    I think your better off doing a piston soak then putting it in the crankcase. many posters here have had good luck with that. But at 175.000 miles I dont think its so much of being gummed up as it is just worn oil ring. Or maybe its massively sludged from really shitty oil.

    Just use very high quality synthetic oil in your car you wont have any of these issues no oil use and spotless crankcase and lifter valley. Sludge comes from shitty oil. High quality oil does not sludge.
     
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  3. Kaptainkid1

    Kaptainkid1 Active Member

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    So you're saying I have all worn piston rings at 180k now. The oil burning has slowed down after a year of seafoam treatment and has nothing to do with my results? It doesn't make any sense?? How do you come up with your conclusions with no research? Do you have a crystal ball?

    The reason why I started this thread was gas engine are inherently dirty carbon building machines. All gas engine build sludge even with meticulous oil changes can't fix that problem. Even if you uses synthetic oil all its life. Its apparent from all these 2nd Gen Prius owners are experiencing oil burning problems. That's a fact when this forum has close to 30% threads about oil burning problem. I believe regardless the Prius engine and many gas engines all find ways to burns oil. I read many threads of diffent car brands and owner have oil burning issue on high mileage cars. Some of the most common with these oil burning cars are the sludge buildup on the oil return channels. Seems to be common issue with Japanese cars in general. Some are just worn out engines. I believe most owner are NOT checking their engine for oil burning and the end result is a blown engine or worn engine parts due to low oil. Which then increase the oil burning via worn piston rings.
    I on the other hand didn't get or let my Prius run on low oil from consumption.
    I have paper work from the previous owner where he took in his Prius every 5-7k for oil changes up to the point in which I became the current owner. His schedule never lapped and has used good to excellent oil every time. So when I picked this used car I made a maintenance adjustments by implementing engine oil clean cycle to improve and possibly fix my oil burning problem before the engine get damaged from low oil. After 1 year and 20k Mile, I believe I was able to slow down the oil burning issue via oil catch can and oil cleaning schedule. People can listen you but I suggest evidence when you make wild claims. I put a year of my time here to prove my experience and evidence.

    SM-J737T1 ?
     
    #23 Kaptainkid1, Apr 23, 2020
    Last edited: Apr 23, 2020
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  4. edthefox5

    edthefox5 Senior Member

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    No I'm just saying at 180,000 miles which is alot of miles it probably has some piston wear. It would be a miracle if it didn't. My engine is a good bench test it has been meticulously taken care of oil wise using very high quality oil. Even then it started to eat a little oil. I moved up to a 40 weight oil and that has essentially stopped.

    Most success I have seen on this site has been piston soak. But if your getting results good for you.

    And all engines do not get sludge it depends on how well the car has been taken care of and the type and quality of oil it uses. My engine is pretty spotless including the piston tops as I have borescoped them. Piston tops are clean becasue its not seeing burned up oil fumes basically soot being put back in the intake path via the pcv. You can tell immediately what kind of oil your using by looking in the Throttle body. If its a gunked up mess its running dino oil.

    Here's proof.
    My bought new and these pictures taken at 155,000 miles and I never even wiped any off the residual oil these pictures are right after I took the valve cover off. You know how after you take the valve cover off it sometimes has all this crud burned into the top of the cover on the inside. Mine had none. I'm not bragging not busting balls I'm just saying this is a non sludge motor. If its sludgy it was treated that way
    from poor maintenance and using crappy dino oil. The dealer dino oil change is the worst imho.
    Everyone on here says oh wow its been dealer maintained woo hoo I have records. To me that's a death sentence for the motor.

    Here's an owner maintained car:
     

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    #24 edthefox5, Apr 23, 2020
    Last edited: Apr 23, 2020
  5. edthefox5

    edthefox5 Senior Member

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    Forgot the borescope.

    You can clearly see clean metal on top of the piston with a circle of soot. All 4 cylinders looked like that. Very very clean except for a circle of soot. This was at 155K miles.

    This is a very clean running engine.Not so much if you use shitty oil.
     

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  6. C Wagner

    C Wagner Member

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    Thanks for this very interesting thread. For those of us with Gen 2 cars who are looking for a combination of effective but simple, how do we think about: Adding some ATF / Seafoam / Marvel Mystery Oil / Toyota high mileage treatment to the crankcase (via the oil filler cap)?

    Have I got it straight that a few of you are strongly against the Seafoam because it's a solvent to crankcase parts, but at least one of you has empirical evidence that in cars ALREADY burning a lot of oil, it helped dramatically? My car has 170K, is using a little in the first 5,000 mi I've owned it (dipstick down 1/5 maybe) and I'm planning for: A) what to do that's easy now - ATF/Toyota fluid/Marvel oil and, if consumption increases, B) what to do later...

    Would love the summary of the thread on this.
     
    #26 C Wagner, Aug 3, 2021
    Last edited: Aug 3, 2021
  7. Kaptainkid1

    Kaptainkid1 Active Member

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    Here is a video about oil burning on Toyota engine, another theory explaining these common problems and freeing up oil sludge from the rings could help with oil burning.







    Android ?
     
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  8. C Wagner

    C Wagner Member

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    Thanks for the video. If you watch it, you’ll see it has little to do with Prius problems. It generally says “Toyotas need synthetic oil changes every 5,000 miles or at least every 6 months due to the modern style rings on the pistons”.
     
  9. Kaptainkid1

    Kaptainkid1 Active Member

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    After driving the Prius now for 4-5 years and about 50000 miles the oil burning on long 1000 miles highways trips are noticeable over stop and go city traffic.

    I lost 1 quart oil on 1000 camping trip with heavy gear. The engine was running harder going up longer hills. I guess this type of stress on the engine exacerbates the oil consumption.

    I feel I need to move forward on reducing the oil consumption by doing the Marvel Mystery Oil or Seafoam Pistons soak. I poured about 3-4 ounce of Seafoam in each piston and let it soak over night on the end oil life. Basically before my scheduled oil change at 6000 miles.

    I haven't driven much but I'm hoping this will free up the sludge in my Pistons rings and reduce my oil burning.
    I only did the SF soak once but read later it's best to soak it 2-3x times before finalizing the piston soak treatment. My next oil change I will do the treatment correctly and post results on the oil consumption problem.

    My next series on Piston soak will have better photos of before and after since I purchased a micro camera. 20210720_132938.jpg 20210720_132339.jpg 20210720_132031.jpg 20210808_145000.jpg 20210808_145008.jpg

    Android ?
     
  10. Kaptainkid1

    Kaptainkid1 Active Member

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    Here are some photos. 20210808_145522.jpg Screenshot_20210808-145408_USB Camera.jpg

    Android ?
     
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  11. edthefox5

    edthefox5 Senior Member

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