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Started By
Message
re: 0W-16 Weight motor oil? WTF
Posted on 12/30/25 at 7:53 pm to RolltidePA
Posted on 12/30/25 at 7:53 pm to RolltidePA
quote:
0W-16 Weight motor oil
Soon we will just add water at this rate
My truck calls for 0w-20
I use 5W-30 and have no issues. Problems like lifters knocking in engines with the AFM cylinder deactivation is due to using 0w-20 oil which is too thin and everytime the engine switches to v4 and back to V8 the lifters are dry firing until oil circulates. The thin oil runs off the lifters when it goes to v4. If you use 5w-30 it will lubricate better and less likely to have lifter noise and eventually engine failure. Of course using wrong oil can void warranty so if you have trouble under warranty then drain the oil and add correct oil then drain and add correct oil again so they don’t notice
1
Posted on 12/30/25 at 8:35 pm to Pondyrosa
quote:
by Pondyrosa
I had a prius
Damn brother. I don't think I would have told that
Posted on 12/30/25 at 8:40 pm to SavageReb
IYKYK
Posted on 12/30/25 at 8:51 pm to deltaland
quote:
Problems like lifters knocking in engines with the AFM cylinder deactivation is due to using 0w-20 oil which is too thin and everytime the engine switches to v4 and back to V8 the lifters are dry firing until oil circulates.
Not as much the oil as much as the oil pump. GM copied Ford in adding more complicated, oil-pressure driven timing components without properly accounting for how much oil those systems take coupled with extending oil change intervals. Had Ford and GM spec'd higher volume/higher pressure oil pumps and stuck with 5,000 mile OCI's running thinner oils would have been a non-issue. Running 5W-30 or 10W-30 oils helps, but then again so does running shorter service intervals for the same reason, replacing the oil before it shears out of spec.
Posted on 12/30/25 at 9:35 pm to CitizenK
quote:
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.
That’s not true. Maybe for some crap oil made in China but not here
Posted on 12/30/25 at 9:38 pm to RolltidePA
I think the thinner oil is hurting engine longevity for marginally better fuel economy (less work for the oil pump, etc.). I hope this goes away with CAFE standards being brought back to sanity under Trump.
My truck calls for 0w-20. The identical truck and engine in other markets calls for 5w-30. Both sheets are printed in the owners manual. Both oils are readily available.
My truck calls for 0w-20. The identical truck and engine in other markets calls for 5w-30. Both sheets are printed in the owners manual. Both oils are readily available.
This post was edited on 12/30/25 at 9:41 pm
Posted on 12/30/25 at 9:41 pm to RolltidePA
My 2022 Silverado uses the Dexos OW-20. At about 50K miles I started getting an “Add Engine Oil” light. I add a quart and it comes back on about every 5K miles. I asked the Chevy technician and he said that’s normal for the Silverado. WTF!?!
Posted on 12/30/25 at 9:42 pm to Clames
quote:
Not as much the oil as much as the oil pump. GM copied Ford in adding more complicated, oil-pressure driven timing components without properly accounting for how much oil those systems take coupled with extending oil change intervals.
The latest 5.3L engine (like within the last couple of years) went back to the older style oil pump. It’s made a huge difference over a variable pump like they used before. I would still consider a slightly heavier weight oil in it over what the manufacturer specs out.
This post was edited on 12/30/25 at 9:44 pm
Posted on 12/30/25 at 10:05 pm to chryso
quote:
What happens if you just put in 5w-30 anyway?
A couple mpg less. My 6.2l locked up and they put a new motor in it. After 1000 miles I changed the oil and went in with 5w30.
Posted on 12/30/25 at 10:08 pm to Hangover Haven
quote:
My Silverado takes 0w-20, looks like I'm pouring colored water into my engine...
Posted on 12/30/25 at 10:16 pm to SavageReb
quote:
Damn brother. I don't think I would have told that
Just because you're insecure, doesn't mean other people are. Now go drive around in your f250 that you've never actually needed a day in your life
Posted on 12/30/25 at 10:35 pm to alphaandomega
quote:
Those engines have very tight tolerances.
You’re parroting crap you heard or read on the internet.
I had an EJ257 which has tolerances nearly identical to the FB series engines and the EJ257 had tighter clearance on the manual bearings and about the same on the rod bearings. In addition, the EJ engines’ piston rings pushed more tightly against the cylinder walls than the newer FB engines, so the EJ motors had less practical clearance there too.
Forget everything you heard from your cousin or internet badasses. Simply do this. Download the European manual for the Subaru Crosstrek and see what oil they recommend. 5w-30 and even 5W-40 is recommended.
The 0W-16 oil recommendation in the USA is for EPA efficiency and emissions crap, at the expense of the engine reliability and longevity.
I wouldn’t buy a newer Subaru. The old ones were tanks. A low output Crosstrek (no turbo) is going to run better with heavier oil than what they recommend. You want to at least make the engine last as long as the CVT, which isn’t very long.
Posted on 12/30/25 at 10:49 pm to TD422
quote:
It seems a lot of the issue there is being traced back to too light a viscosity
That’s a major factor, but the real issue is they forgot how to build bearings, camshafts, and lifters. They are using bearings that are too narrow and and poor (cheaper) metallurgy. The narrowness puts too much force/friction on too little surface area and the thin oil doesn’t lubricate as well and the cheap metal isn’t as hard and wears faster.
Toyota has the same problem or worse with their 3.4L V6 turbo in the Tundra. Piece of shite motor with low viscosity oil is a recipe for disaster.
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