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0W-16 Weight motor oil? WTF
Posted on 12/30/25 at 8:33 am
Posted on 12/30/25 at 8:33 am
Neighbor bought a new Subaru Outback and as I was checking it out I saw the oil spec is 0W-16. No way can that be good for longevity.
Both of my Mazdas and Truck take 5W-30 still, which I guess seems like heavy weight oil these days.
Both of my Mazdas and Truck take 5W-30 still, which I guess seems like heavy weight oil these days.
17
Posted on 12/30/25 at 8:39 am to RolltidePA
The cars that take 0W will require thicker oil when the milage gets high
Posted on 12/30/25 at 8:39 am to RolltidePA
Blame EPA standards and the manufacturers for fudging the numbers to improve mileage estimates. Several US manufacturers are having engines grenade due to insufficient oil viscosities.
Check with a trusted mechanic for his input, and run, don't walk, from 0 weight oil.
Check with a trusted mechanic for his input, and run, don't walk, from 0 weight oil.
Posted on 12/30/25 at 8:41 am to RolltidePA
The new Camry takes 0w8.
This post was edited on 12/30/25 at 8:47 am
Posted on 12/30/25 at 8:43 am to RolltidePA
Dodge 6.4 hemi takes 0w-40 had to start changing my own as it can be hit or miss if the quick lube places have it on hand
Posted on 12/30/25 at 8:43 am to RolltidePA
My Silverado takes 0w-20, looks like I'm pouring colored water into my engine... 
Posted on 12/30/25 at 8:46 am to RolltidePA
What happens if you just put in 5w-30 anyway?
Posted on 12/30/25 at 8:50 am to TD422
quote:
run, don't walk, from 0 weight oil
I've been using 0w20 in my Acura TLX since I got it in Aug 2017 and have 117,000 miles on it with no issues.
Posted on 12/30/25 at 8:51 am to chryso
quote:
What happens if you just put in 5w-30 anyway?
not good things if i had to guess. lol.
Posted on 12/30/25 at 8:52 am to chryso
Use the manufacturer recommended oil while under warranty, do not give them an easy out for not covering issues.
After that use what you are comfortable with or performs best... an engine oil analysis typically costs $40-50 and can tell you a lot.
After that use what you are comfortable with or performs best... an engine oil analysis typically costs $40-50 and can tell you a lot.
Posted on 12/30/25 at 8:52 am to chryso
quote:
What happens if you just put in 5w-30 anyway?
Possibly void the warranty?
Posted on 12/30/25 at 8:52 am to chryso
quote:
What happens if you just put in 5w-30 anyway?
Those engines have very tight tolerances. Thicker weight will not get into places that need it and will cause excessive wear.
After they get higher mileage and the engine has some wear a little thicker oil will be ok.
Posted on 12/30/25 at 8:54 am to bbarras85
I had a prius that was burning 0w20. I put 5w30 in and no issues. You can run bacon grease on a high milage vehicle and it will be fine
Posted on 12/30/25 at 8:54 am to RolltidePA
My ‘21 Lexus owner manual reads 5w-30 is acceptable, which I use in the summer
Posted on 12/30/25 at 8:55 am to FlyingTiger06
quote:
I've been using 0w20 in my Acura TLX since I got it in Aug 2017 and have 117,000 miles on it with no issues.
I would imagine you change it religiously...that's the key. If you're not one of those who sticks to the change out schedule, 0 weight can be scary.
I just think that there comes a point of no return with trying to squeeze everything you can out of an engine, and in the case of GM's 6.0 issues - engineer's probably crossed that line. It seems a lot of the issue there is being traced back to too light a viscosity. Just my opinion.
ETA, sorry. meant 6.2.
This post was edited on 12/30/25 at 8:59 am
Posted on 12/30/25 at 8:57 am to RolltidePA
Posted on 12/30/25 at 8:57 am to alphaandomega
Exactly.
Posted on 12/30/25 at 9:05 am to RolltidePA
0W-20: This oil flows extremely well in cold conditions, making it ideal for modern, fuel-efficient engines. “0W" in this oil number means the oil remains very thin in winter, ensuring easy starts and quick lubrication. The "20" in oil numbers indicates its thickness at high temperatures, which is suitable for newer engines designed for lower-viscosity oils.
Posted on 12/30/25 at 9:11 am to RedMustang
quote:
The "20" in oil numbers indicates its thickness at high temperatures, which is suitable for newer engines designed for lower-viscosity oils.
That part would be my concern. How quickly in the heat of the south would that 20 or 16 shear down to a 0 or 5? I'd be okay in NC, but I can't imagine a place like Arizona or Florida would be hospitable to that spec. You'd have to be on top of the maintenance schedule. I lot of folks I know just don't aren't up for it.
Posted on 12/30/25 at 9:14 am to RolltidePA
quote:
You'd have to be on top of the maintenance schedule. I lot of folks I know just don't aren't up for it.
100%
Most owners never read the owner’s manual either
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