The last time we looked at this at Bitog, we posted examples of auto magazine writers using both terms randomly. It in the mainstream.
Before motor oil was for gasoline engines the terms Light and Heavy were in common use, this was before viscosity or grade were common descriptors and before the SAE setup standards for what a Light and Heavy oil were.If you know what somebody is talking about , why correct them for minor things that don't change the facts ? Nobody is impressed with irrelevant knowledge .
That’s even a better answer.It is not viscosity either, rather it is a grade that refers to a viscosity range. 30 grade is not 30 cSt KV100 C
I don't know the history behind the term "weight".
Right. As I understand it, it's grade not weight or viscosity.That’s even a better answer.
At the end of the day , does it really matter if they think that ? Will it somehow change which oil they select ? Does it change the characteristics of the oil ? NO to all three ...Quite often people think the w in the oil numbers means weight. Wait, what?
No it doesn’t matter just like when people put an R in a word that doesn’t have one like Warsh or warshington state. Or say crick instead of creek. You know what they mean; but you kind of look at them funny and question if their family tree has any branches.At the end of the day , does it really matter if they think that ? Will it somehow change which oil they select ? Does it change the characteristics of the oil ? NO to all three ...
now, now Fishsticks...No it doesn’t matter just like when people put an R in a word that doesn’t have one like Warsh or warshington state. Or say crick instead of creek. You know what they mean; but you kind of look at them funny and question if their family tree has any branches.
Kind of like how it doesn’t matter what people wear no matter the setting?At the end of the day , does it really matter if they think that ? Will it somehow change which oil they select ? Does it change the characteristics of the oil ? NO to all three ...
Because mass doesn't describe the flow characteristics of the oil, whereas the viscosity does.Well, we say weight when we should say mass so why not use mass for whatever? as a pound or kilogram as
Weight is a layman's or marketing term while viscosity is used "in the lab" or in the industry.So my question is this I know the W on the label is for winter like 5W30. I understand the 5 is a viscosity that behaves well in cold weather and when the oil gets hot the viscosity is at a 30 grade. So where does the term weight come from when it all has to do with viscosity?
How can that be?All I can tell you is that a gallon of 5w-40 is much heavier than a gallon of 0w-20.
I can tell by how sore my arms get from carrying a gallon of 5w-40 from the back of Wal-Mart. I should use lighter oil....
Because engines and motors are both "sources" of torque.Weight is a layman's or marketing term while viscosity is used "in the lab" or in the industry.
While do people call engines motors?
My point is the term weight is generally misused. No other implication intended. I'm sure you know what they say about making assumptions.Because mass doesn't describe the flow characteristics of the oil, whereas the viscosity does.
Would one say a kilogram or a pound of molasses or cement has the same flow (viscosity) characteristics as an SAE 5W20 grade oil with 50 cSt viscosity at 40C and a 8.8 cSt at 100C?
Again, an SAE "Grade" describes the Viscosity Range of a lubricant because viscosity describes flow, or more correctly, the resistance of a fluid to flow.
Because mass doesn't describe the flow characteristics of the oil, whereas the viscosity does.
Would one say a kilogram or a pound of molasses or cement has the same flow (viscosity) characteristics as an SAE 5W20 grade oil with 50 cSt viscosity at 40C and a 8.8 cSt at 100C?
Again, an SAE "Grade" describes the Viscosity Range of a lubricant because viscosity describes flow, or more correctly, the resistance of a fluid to flow.
I took that as sarcasm, you are correct the differing weight of the containers is not going to be noticeable.How can that be?
The typical density of a 0W20 is 0.845 grams/mL, and the density of a typical 5W40 is 0.850 grams/mL