Oil... how does it work? [split]

[Vovchandr]

@bennyfizzle

It is a unit of measurement, yes, so we’ll put it this way.

I’ll try to relate the units in feet and inches:

20W50

20 feet @ 32F, 50 inches @ 212F.

It’s not the same unit of measurement between the two, of course the SAE rating will be lower in viscosity when hot on the same scale, but it’s NOT. This is why the 2nd number is HIGHER even though the oil is THINNER at that temperature vs. the first number.

If it’s not the same scale, where is the rule that’s written that a thick fluid at low temp should be rated lower than a thin fluid at a high temp.

Otherwise you’re just making shit up by saying it’s not the same scale, because it is just ONE SCALE.

@bennyfizzle

The viscosity of your mystery fluid would be higher if it got thicker.

I can not comprehend what you are not understanding.

So if the mystery fluid viscosity would be higher (BIGGER) if it got thicker, why does oil get lower (SMALLER)?

I don’t understand what you’re not understanding, when you’re agreeing with me.

@bennyfizzle

[quote=Viscosity - Wikipedia]Thus, water is “thin”, having a lower viscosity, while honey is “thick”, having a higher viscosity. Put simply, the less viscous the fluid is, the greater its ease of movement (fluidity).[1]

[quote=bennyfizzle;928527][/quote]

I’ll play along.

So would 5 be low viscosity then? (thin) and 50 be high viscosity then? (thick)?