2019 Toyota 4Runner, Castrol Edge 0W-20, 7508 oci, 44678 odo
- Thread starter Tuco_S
- Start date
Previous fill was Havoline Pro-DS 5W-30. That might have something to do with it being a bit thick?
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- Jul 28, 2023
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- 339
Its a 4runner. You buy those to survive nuclear war and the upcoming apocalypse.
You can do an oil analysis next time at 500k miles
You can do an oil analysis next time at 500k miles
In this case I'd say the oil is reaching the end of it's useful life but not quite yet.
"One other thing... Most folks would consider an engine oil to be shot when the TBN reaches 2 - 3. This isn't actually the case. An oil can function quite happily with a TBN of zero. The thing you have to remember is that oil formulators don't tend to focus directly on stuff like TBN depletion, acid formation or oil oxidation. What they're really concerned with is the onset of exponential viscosity increase. For many of the lengthy, industry standard engine based oxidation tests, it's both impractical and uneconomic to just use over based detergent to control oxidation. Given how fast it can deplete, you might need an oil with a starting TBN of around 20 to keep the TBN above 2 at the end of the test! For this reason, modern oils contain a cocktail of various Antioxidant chemistries, each of which plays a role in keeping the oil from 'breaking' long after the TBN reserve has been exhausted. Just to be clear, there's nothing wrong per se with changing out your oil when the TBN hits 2 - 3 but if you do a UOA, and find the oil's TBN is zero, it's not something to freak out about."
"One other thing... Most folks would consider an engine oil to be shot when the TBN reaches 2 - 3. This isn't actually the case. An oil can function quite happily with a TBN of zero. The thing you have to remember is that oil formulators don't tend to focus directly on stuff like TBN depletion, acid formation or oil oxidation. What they're really concerned with is the onset of exponential viscosity increase. For many of the lengthy, industry standard engine based oxidation tests, it's both impractical and uneconomic to just use over based detergent to control oxidation. Given how fast it can deplete, you might need an oil with a starting TBN of around 20 to keep the TBN above 2 at the end of the test! For this reason, modern oils contain a cocktail of various Antioxidant chemistries, each of which plays a role in keeping the oil from 'breaking' long after the TBN reserve has been exhausted. Just to be clear, there's nothing wrong per se with changing out your oil when the TBN hits 2 - 3 but if you do a UOA, and find the oil's TBN is zero, it's not something to freak out about."
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'19 4Runner in Las Vegas.
Your beautiful beast is a prime candidate for HPL 10W20 and 20k mile OCI with a durable oil filter.
Your beautiful beast is a prime candidate for HPL 10W20 and 20k mile OCI with a durable oil filter.
Sure you didn't put 5W30 in there?
If it was 0W20 then 7500mile OCI is your limit.
What Filter in use? Toyota Denso?
If it was 0W20 then 7500mile OCI is your limit.
What Filter in use? Toyota Denso?
This^^^^^^^^^. Vis is up.
Welcome to the most reliable production engine ever made.
The Car Care Nut said he's never had to tear down a 4.0L dual vvti engine.
The Car Care Nut said he's never had to tear down a 4.0L dual vvti engine.
Or just keep doing what hes doing without spending $70+ on an oil change. 5ppm of iron in 7,500 is stellar!
Engine design and construction, plus operating conditions are what contribute low metal numbers in a spectrographic analysis.
Previous fill was 5W-30 Havoline Pro-DS, which ran great by the way. Same fuel economy. The Toyota Service Manual notes there will be @ 0.9 quarts of old oil remaining when you drain the oil and replace the filter.
This was my first run with Castrol Edge 0W-20. I use oem Toyota oil filters.
Can't be one thread without HPL brought into it.
wemay
Site Donor 2023
100%Can't be one thread without HPL brought into it.
been running 5w30 or 0w30 forever in my 4R. 0w20 always made my engine sound loud, it def got quieter switching to that oil
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Mine runs quiet on a couple different 0W-20's such as Havoline Pro DS, and the current fill which is Shell Gas Truck. I bought the Shell a couple years ago, and just got around to using it. I'm kinda disappointed to see it's been discontinued, as I would definitely buy it again.
It sounded like a locomotive on Mobil 1 AFE. I don't know if there is any correlation between how noisy or quiet it runs with how well the oil protects your engine, but it was annoying enough that I won't use it again.
It sounded like a locomotive on Mobil 1 AFE. I don't know if there is any correlation between how noisy or quiet it runs with how well the oil protects your engine, but it was annoying enough that I won't use it again.