- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
re: Is 0w20 really what is best for our vehicles?
Posted on 7/22/23 at 6:01 pm to Strannix
Posted on 7/22/23 at 6:01 pm to Strannix
quote:
But the fact is the lighter oils ARE worse for wear.
Blanket statements like this are rarely correct.
A lighter oil may or may not allow more wear in an engine. Even if a higher viscosity oil has a higher film strength the engine still has to be designed to use it. Thicker oils than recommended will run hotter and will not coat tight tolerance parts as well and will be slower, especially at colder temperatures at getting oil to all the internals on cold starts. Oil pumps designed for thinner oils can have issues keeping the volume high enough at the far ends of the oiling system.
There is zero doubt that in the search for CAFE benefits and HP numbers from manufacturers that don't care about CAFE for certain vehicles, we are seeing thinner oils. But jumping up several oil viscosities on an engine designed with lower viscosities in mind will likely increase wear vs decreasing wear.
There are reasons to go outside the manufacturers suggestions for oil but if thicker is better in a blanket way then why not run 90 weight gear oil in your crankcase?
Posted on 7/22/23 at 6:21 pm to Obtuse1
quote:
But jumping up several oil viscosities on an engine designed with lower viscosities in mind will likely increase wear vs decreasing wear.
Not true, some engines, especially those with cam phasers that rely on oil pressure, are seeing routine failures due to using OEM spec'd oil. As the engines wear and tolerances open there is not enough volume from the oil pump to keep the required pressures where they need to be in operation. BMW, MB, Ford, GM all have engines with known failures related to oils they recommend in the US but not elsewhere. Part of why you are seeing more recommendations or requirements 5W50, 10W60, etc. There's not a factory engine out there that has tolerances so tight a 10W30 or even a 15W40 would hurt, OEM's spouted that nonsense to explain away the CAFE oils.
Posted on 7/22/23 at 9:31 pm to Obtuse1
quote:
quote:
But the fact is the lighter oils ARE worse for wear.
Blanket statements like this are rarely correct.
Indeed.. many people do not realize the base oil viscosity is the lower of the two ratings. The higher viscosity rating is achieved through additives.
Popular
Back to top
Follow TigerDroppings for LSU Football News