2020 Rav4 Hybrid 60k mi; Valvoline Restore and Protect 5W-30 4k mi

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Here’s my second UOA on the vehicle. Oil Analyzer’s thinks this is M1 0W-16 again but it’s Valvoline Restore and Protect 5W-30. Stepped up viscosity due to severe fuel dilution from the cold, short trips and the nature of the hybrid. Sticking to this interval for the winter months, planning on a UOA in the summer to see what the fuel dilution looks like. Oh and the silicon could be from my Fumoto valve, looked kinda dirty before I drained, could only get it so clean. OEM filter.

Heres a link to the original thread a year ago:


Let me know your thoughts!

IMG_2324.webp
 
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Wait I have been using a Fumoto valve 25+ yrs and never experience high silicon levels. Unless u used RTV at the Fumoto valve the blue supplied gasket would not increase the silicon level. Did u allow the oil to flow out for an arbitrary interval greater than 30 seconds before collecting the used oil sample? Did u change the engine air filter? By the way, contact custom service and fix ur data set. They are more than happy to help. It took me a while to figure out how to add the correct oil sample on-line prior to submitting the oil sample.
 
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Wait I have been using a Fumoto valve 25+ yrs and never experience high silicon levels. Unless u used RTV at the Fumoto valve the blue supplied gasket would not increase the silicon level. Did u allow the oil to flow out for an arbitrary interval greater than 30 seconds before collecting the used oil sample? Did u change the engine air filter? By the way, contact custom service and fix ur data set. They are more than happy to help. It took me a while to figure out how to add the correct oil sample on-line prior to submitting the oil sample.
I’ll clarify: I’m suggesting the silicon contaminated the sample, not that silicon was in the engine. Air filter has about 10k miles on it. I saw dirt on the valve it and tried to clean it. Waited about 30s of flow to get a sample.

I may reach out but it’s not going to change the particle counts so I’m not very worried.

Thanks
 
Looks good all in all, keep doing what you're doing, some might say to stretch it to 5k which it could but I'd probably leave it as it. Could switch to any 30/40 euro as well. The 0/5w-40's shear to a 30 and with fuel dilution the kv100 would be in the 10's. RP 5w-30 kv100 is 10.8 new so a drop of about 2.5 but it's doing the job well.
 
I would probably change the oil a little more often in the cold. My 2024 Rav hybrid is still on the dealership oil changes (free). Do you know if a MityVac will work on your Rav 4?
 
Looks good all in all, keep doing what you're doing, some might say to stretch it to 5k which it could but I'd probably leave it as it. Could switch to any 30/40 euro as well. The 0/5w-40's shear to a 30 and with fuel dilution the kv100 would be in the 10's. RP 5w-30 kv100 is 10.8 new so a drop of about 2.5 but it's doing the job well.
Considered the euros but with this report I don’t think I’ll be changing anything. Also happy with 4k in the winter.
How much of this 4k miles were ICE?
Thanks
Is it the normal hybrid or the plug in?
Regular hybrid, ICE is involved in every drive.
I would probably change the oil a little more often in the cold. My 2024 Rav hybrid is still on the dealership oil changes (free). Do you know if a MityVac will work on your Rav 4?
I have a mighty vac but havent tried.

For cold, short trips and the nature of the hybrid Id stick with 0w-20
11ppm of iron per 1k miles with 0w-16 and measurable bearing wear metals vs 1ppm of iron per 1k miles and almost no bearing metals with 5w-30. I dont have an in interest in finding what a viscosity inbetween would do. I have not noticed a difference in fuel economy going from 0w-16 to 5w-30.
 
Regular hybrid, ICE is involved in every drive.
I thought another RV friend had mentioned that his Prius hybrid allowed battery only under 25 MPH? Maybe he ment they were both working and I misunderstood him. 🤔

Thinking out loud. I don't know how all the oems handle non plug in hybrids.
 
I thought another RV friend had mentioned that his Prius hybrid allowed battery only under 25 MPH? Maybe he ment they were both working and I misunderstood him. 🤔

Thinking out loud. I don't know how all the oems handle non plug in hybrids.
The two power trains are always working in tandem, but on the newest ones, ICE is known to shut off more often than before.
 
I thought another RV friend had mentioned that his Prius hybrid allowed battery only under 25 MPH? Maybe he ment they were both working and I misunderstood him. 🤔

Thinking out loud. I don't know how all the oems handle non plug in hybrids.
The range is pretty low like 2 miles I believe and bit more if you drive under 10mph but it's more for zipping around like driving to the bus stop in your neighborhood or in the parking lot.
 
I’ll clarify: I’m suggesting the silicon contaminated the sample, not that silicon was in the engine. Air filter has about 10k miles on it. I saw dirt on the valve it and tried to clean it. Waited about 30s of flow to get a sample.

I may reach out but it’s not going to change the particle counts so I’m not very worried.

Thanks
So in 12K mi and in a relatively sealed system, the Si level went up 6 times. If I am reading the post correctly, the air filter was changed shortly after the sample #1 and I assume the Fumoto valve was installed prior to sample #1. Am I correct?
 
So in 12K mi and in a relatively sealed system, the Si level went up 6 times. If I am reading the post correctly, the air filter was changed shortly after the sample #1 and I assume the Fumoto valve was installed prior to sample #1. Am I correct?
Air filter was changed shortly after sample 1. Fumoto valve was installed after sample 1. There have been a few oil changes in between. Certainly could have been contaminated from something to do with the air filter or the visibly dirty Fumoto valve. Not at all concerned.
I thought another RV friend had mentioned that his Prius hybrid allowed battery only under 25 MPH? Maybe he ment they were both working and I misunderstood him. 🤔

Thinking out loud. I don't know how all the oems handle non plug in hybrids.
The range is pretty low like 2 miles I believe and bit more if you drive under 10mph but it's more for zipping around like driving to the bus stop in your neighborhood or in the parking lot.
What Javier said is correct. There’s a trivial “EV mode.” Absolutely no practical purpose.
 
The two power trains are always working in tandem, but on the newest ones, ICE is known to shut off more often than before.
The range is pretty low like 2 miles I believe and bit more if you drive under 10mph but it's more for zipping around like driving to the bus stop in your neighborhood or in the parking lot.
What Javier said is correct. There’s a trivial “EV mode.” Absolutely no practical purpose.
Thanks all! I'm still learnin' 😅
So if I understand correctly only the plug-in hybrids can be "independent" from each other. Meaning they can be powered on EV only for a certain range then need to be recharge. Not trying to change the thread direction & I now recognize the mileage of 4k you posted is the total w/ICE.
 
I thought another RV friend had mentioned that his Prius hybrid allowed battery only under 25 MPH? Maybe he ment they were both working and I misunderstood him. 🤔

Thinking out loud. I don't know how all the oems handle non plug in hybrids.
I don't have a Rav4 but a Prius V. The "battery only" mode is not set in stone for a particular vehicle speed. What I notice is it tends to use a lower battery only speed in colder weather, and if you are just cruising the speed can be higher than when you are using the torque to accelerate. For mine it can be as high as 35-40mph when coasting after warm up to as low as 10mph when cold and accelerating off a red light. The rule of thumb for me is it can work in the parking lot, stop and go traffic jam, and that's about it.

You can think of these system as the laundry in your home, whereas the laundry basket is your hybrid battery, electricity is your clothes. Your clothes go between your closets, your body, your laundry basket, the washer, the dryer, etc. You have to make sure they don't all get stuck in one place, and if you do, you may need to buy more clothes (i.e. use the gas engine), or you need to throw away your clothes (apply mechanical brakes).
 
Time and time again, we see fuel dilution not having an impact on wear just like this sample. Bitogers always worrying about something for nothing
 
Impressed with how low wear is despite fuel dilution. I'd expect viscosity to drop with fuel dilution as high as it is. TBN is solid. Great report.
I had very very high fuel dilution at one point in my Hyundai and did not have any over the top wear numbers, even with being on boost most of the time. I learned to ignore fuel dilution as the numbers from Polaris Labs showed me I was all worried about nothing. My max oil change interval is 3,250 mile.
 
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