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re: 0W-16 Weight motor oil? WTF
Posted on 12/30/25 at 9:31 am to RolltidePA
Posted on 12/30/25 at 9:31 am to RolltidePA
quote:
No way can that be good for longevity.
The "0" weight oil circulates more freely through the motor when cold. Considering most of the wear in you motor occurs in the 1st 30 seconds of start up, this actually improves the longevity of your motor.
1
Posted on 12/30/25 at 9:39 am to RolltidePA
That's what my new Toyota takes, just got in a few jugs of Idemitsu IFG-5 0W-16. Some cars go down to 0W-8. As far as longevity, saw a Camry with the same 2.5L 4-banger I have with 600k+ miles with dealership services and 0W-16 so it's probably ok as far as it's the right spec and avoid extended OCI's. Toyota's OW-16 has a stout EP package.
Posted on 12/30/25 at 9:44 am to bbarras85
quote:
not good things if i had to guess. lo
Slight decrease in fuel economy mostly. The owners manual for my Rav4 says 0W-20 is ok but should be changed back to 0W-16 on the next oil change, the Australian owners manual says 0W-16, 0W-20, 5W-20, 5W-30 is all fine depending on temps and driving.
Posted on 12/30/25 at 9:45 am to RolltidePA
You do realize that crumb rubber is melted into the base oil to give it higher viscosity. This only means less rubber in the oil.
Posted on 12/30/25 at 10:15 am to Hangover Haven
quote:
My Silverado takes 0w-20, looks like I'm pouring colored water into my engine...
My 2021 GMC Sierra with 55k miles is guzzling oil right now. Low oil light comes on even with 2000 miles left till next oil change. Ross Downing is performing oil consumption test. Have to bring it for oil change every 2000 mile intervals (3x) for the test...and I'm paying for it each time. I'm not sure what GMC will do if anything to fix it.
This post was edited on 12/30/25 at 10:16 am
Posted on 12/30/25 at 10:16 am to klrstix
quote:
The "0" weight oil circulates more freely through the motor when cold. Considering most of the wear in you motor occurs in the 1st 30 seconds of start up, this actually improves the longevity of your motor.
It's not the 0 that would be concern, it's the 16 and how it would quickly shear down in more extreme hot conditions that happen in the south.
5 weight oil service temps covers down to -22F (-30C) degrees. Something we'll rarely if ever see even in NC.
Posted on 12/30/25 at 10:20 am to RolltidePA
There are YouTube videos discussing the light weight oils used in engines sold in the US. Basically it questions why a 0w oil in specked in a US engine and the exact same engine in other parts of the world are specked at 5W oils. The reason given is that US engines have to squeeze out every MPG they can to satisfy EPA regulations.
Posted on 12/30/25 at 10:46 am to LSUBanker
quote:
My 2021 GMC Sierra with 55k miles is guzzling oil right now. Low oil light comes on even with 2000 miles left till next oil change. Ross Downing is performing oil consumption test. Have to bring it for oil change every 2000 mile intervals (3x) for the test...and I'm paying for it each time. I'm not sure what GMC will do if anything to fix it.
My '15 Silverado is as well, I'm just putting 2 quarts in it every time...
Don't know why they use such a low viscosity oil...?
Posted on 12/30/25 at 10:59 am to CitizenK
quote:
You do realize that crumb rubber is melted into the base oil to give it higher viscosity.
Well, that's pretty crumby.
Posted on 12/30/25 at 12:09 pm to RedMustang
quote:
The "20" in oil numbers indicates its thickness at high temperatures,
This is a pretty common misconception because of how confusing multi viscosity oil nomenclature is.
Engine oil does not thicken as the temperature rises. The spec means that the 0w20 oil will be 0w at ambient and equivalent to a 20w at a given operating temperature. They achieve this effect through additives that slow the thinning of the oil as temp rises.
Maybe a better way to say it is that a 0w20 is a 0w oil that behaves like a 20w oil when hot.
Posted on 12/30/25 at 12:19 pm to chryso
I’ve been wondering if using a 0w-30 in the new tundras would help any.
Posted on 12/30/25 at 1:56 pm to TD422
quote:
a trusted mechanic
What the frick is that?
Posted on 12/30/25 at 2:03 pm to jnethe1
quote:
I’ve been wondering if using a 0w-30 in the new tundras would help any.
Think GM changed the recommendation to 0W-40 for their gasser trucks. Pretty sure it wouldn't hurt the Tundra either, see 0W-40 everywhere but hardly 0W-30.
Posted on 12/30/25 at 2:40 pm to RolltidePA
Posted on 12/30/25 at 2:51 pm to RolltidePA
quote:
It's not the 0 that would be concern, it's the 16 and how it would quickly shear down in more extreme hot conditions that happen in the south.
I do get that... Needless to say, all oils have some form of a life span on it when in use. I would be interested in seeing the oil change intervals recommended in the manual.... Also if it recommends a heavier weight for hotter temps...
As someone mentioned previously, sending oil samples off for testing would help monitor real world oil degradation...
Posted on 12/30/25 at 3:03 pm to chryso
quote:
What happens if you just put in 5w-30 anyway?
If it's a Japanese car, nothing. They run 5w-30 overseas.
Posted on 12/30/25 at 3:23 pm to Zakatak
quote:
This is a pretty common misconception because of how confusing multi viscosity oil nomenclature is.
Engine oil does not thicken as the temperature rises. The spec means that the 0w20 oil will be 0w at ambient and equivalent to a 20w at a given operating temperature. They achieve this effect through additives that slow the thinning of the oil as temp rises.
Maybe a better way to say it is that a 0w20 is a 0w oil that behaves like a 20w oil when hot.
The W means winter or cold weather flow which is usually referring to environments where the temperature can reach below 0 degrees Fahrenheit.
Posted on 12/30/25 at 5:59 pm to BigD45
If anyone’s having oil burning or consumption issues try Valvoline Restore & Protect. This oil is like a cheat code for engines. Relives ticking noises, cleans pistons, etc
Trust me
Trust me
Posted on 12/30/25 at 6:20 pm to stoov
STP-type stuff, or no?
Posted on 12/30/25 at 7:39 pm to N2cars
No it’s oil made in 5W30, 5W20 and 0W20. Check some YT vids on it
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