Measuring an engine oils friction coefficient

[CATERHAM]

Quaker State claims their Q-Racing series of racing oils have
a lower friction coefficient than their competitor's oils.
Apparently the friction level at various oil temps is measured on a "High Frequency Reciprocating Rig" whatever that is.

Anybody heard about this as a way of comparing engine oils?

 

[JAG]

I've seen it mentioned in quite a few research papers and patents on motor oils.
Here is one by Shell for a racing oil.
The Quaker State oil you mentioned may be based on the patent.
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1450695#Post1450695

 

[benjamming]

Who do they consider their competitor? What are the actual values?

 

[CATERHAM]

Competitors are presumably the usual suspects, Mobil 1, Amsoil, Red Line, Lucas Oil, Royal Purple to name a few.
Values under 0.12 for all Quaker State grades.

 

[Camu Mahubah]

I remember when I first got here on bob. There was a post about a massive engine on the dyno with different viscosity oils. I have looked for that post many times. The search function...well lulz.

It even had pictures.

 

[Camu Mahubah]

Originally Posted By: Camu Mahubah
I remember when I first got here on bob. There was a post about a massive engine on the dyno with different viscosity oils. I have looked for that post many times. The search function...well lulz.

It even had pictures.


Does anybody remember the thread I'm talking about?

 

[Shannow]

Was it the one that was generated in OZ with a C.O.M.E. V-8 ?

referenced here
http://www.worldsbestoil.ca/dyno-test.php

 

[RI_RS4]

Originally Posted By: CATERHAM
Quaker State claims their Q-Racing series of racing oils have
a lower friction coefficient than their competitor's oils.
Apparently the friction level at various oil temps is measured on a "High Frequency Reciprocating Rig" whatever that is.

Anybody heard about this as a way of comparing engine oils?


High Frequency Reciprocating Rig

 

[Steve S]

4X less?

 

[mechtech2]

I think it would greatly depend on when the friction was measured.

Normal circumstances [hydrodynamic wedge] or very high loading [past the oil and down to the sacrificial metals/additives]?