Fun with the Royal Purple guy

[Genie47]

I got this off BITOG. Some guy went to ji siao the Royal Purple salesman in some store. He used Castrol SLX-A3. This is how it went with the Timken test.

 

I stopped by the Royal Purple demo tent at the local auto store today. he had his bearing tester with the weights. "Sir would you like to see a demo of RP oil"

"Sure" I said.

"M-1 ,or QS" he said.

M-1, I replied.

He put M-1 5W30 in the cup added the weights and the motor stopped at 8 lbs.

He then added some RP and it began to turn.

Great oil I said. Could you do that test with some of MY oil.

Sure, he said. I ran over to my car and grabbed a bottle of GC . Try it with this !

He poured it into the cup and started the motor, 2 lbs, 4 lbs .

It will stop any second he said. 6 lbs. 8 lbs, 10 lbs. The motor wasnt straining at all.

 

There must be some RP left on the bearing he said. so he cleaned the bearing. Still running ? There must be some residual in the cup he murmured.

Why dont you clean the cup. and change to a new bearing and try it again I replied.

New bearing, new GC in cup and 10 lbs of weight later he was baffled. What is this stuff he said. GC I replied. Its great isnt it.

You better get outta here before I look bad he said. Wait till my boss hears about this stuff he said.

I think I sold the other spectator on the GC!

 

 

This really made my day

 

Details here: http://theoildrop.server101.com/cgi/ultima...c;f=51;t=000866

 

Edited March 14, 2006 by Genie47

[Adawang]

What oil is this GC?

Never heard of it Pls enlighten

[Genie47]

Castrol SLX is GC. GC is abbreviation for German Castrol.

[Itguy28]

Sorry for asking.

 

Wats this GC thing?

[Adawang]

oh ok , tks , tried google on GC oil haahaa

[Adawang]

see Genies reply above

 

tink i shud try this oil on my next service

What viscosity they have? and how are they priced?

Edited March 19, 2006 by Adawang

[Wolverine]

WOW...I have a Proton Saga ...can i use GC and make it less proton? wow......can i ? can i? will it make it some super ferrari car? huh? huh? thanks ....

[Genie47]

0W30 only. Very very expensive but well documented oil in the UOA department. Cheapest we can get here is 78/4L at Forklift Enterprises. If you are looking for fuel economy because it is a 0W30 forget it. It is the thickest 0W30 available. Just a tad short of being classifed as a 0W40. It is made for European cars in mind meeting MB 229.3 and VW 502.02 specs.

[Wolverine]

But what if i have a cheap korean?

[Genie47]

Cheap Korean use cheap oil lah! Check your owners handbook. Chances are they ask for ILSAC GF3 or GF4. It will be at least a 10W30 and below. Why? Usually 10W30 and below oil meet GF3 or GF4. In most cases they are cheap oil for the masses.....well not in Singapore. Thin oil seems more expensive in Singapore.

 

My manual very cheap and c0ck up as well. Ask for GF3 oil and in the end the oil chart suggests 10W40 or 20W50. Whoever wrote it was employed cheaply too because no 10W40 or 20W50 meets GF3!

[Adawang]

Me looking for smooth oils

Handbook recommend nothing less than 50 for Mit ATR

but me already using 40.

 

Very good oil I experienced using was Yacco with molydenum disulphide,

long ago. makes the engine damn smooth.

Edited March 19, 2006 by Adawang

[Upguy]

you should do part time work and write up the manual, that way people will be more educated about using thin oils

[Sky8807]

Was just thinking aloud, what prevent the bearing from seize is probably the anti-friction additivies in the oil rather than the oil itself. A thinner oil need a higher % of this additivies added. What if we do a test on 2 sample of the same oil and added an aftermarket anti-friction additivies on one, probably can see obvious different.

[Genie47]

The Timken test is used to gauge the effectiveness of barrier additives. This happens only at start up (no oil pressure) or sudden surge in acceleration (sudden drop in oil pressure). Thinner oil at full oil pressure has higher film strength than thick oil at the same oil pressure. As you know, oil pressure is much a misnomer in automotive lubrication. There is no way to measure oil flow and hence it is indirectly measured as oil pressure. Here lies the problem, high oil pressure doesn't mean high oil flow.

 

When oil pressure is up, there is hydrodynamic lubrication and there is no contact between parts.

[Sky8807]

Boundary lubricationis the most common type of lubrication in day-to-day usage because it finds its applicability where hydrodynamic and elasto-hydrodynamic lubrication fails, relatively slow speeds, high contact pressures, and with less than perfectly smooth surfaces. As running conditions become more severe such as with rough surfaces, and high contact pressures, wear becomes a severe problem to the system. to combat this wear it is neccesary to prepare the surface of the metal accordingly. Taking basic mineral oil as the basis of lubrication, which in most cases it is, it is possible to create a lubricant that forms a surface film over the surfaces, strongly athering to the surface. These films are often only one or two molecules thick but they provide enough of a protection to prevent metal to metal contact. This type of boundary protection is known as boundary lubrication.

 

A brief explanation of what needs to be added to basic mineral oil in order to create an effective boundary lubricant. Generally, the best additives are active organic compounds with long long chain molecules and active end groups. These compounds bind tightly and intricately with each other, forming a film that builds up on the surface of the metal, itself binding strongly to the metal. This results in a thin film that is very diffulcult to penetrate. When two surfaces, each covered with a boundary layer, come in contact with each other they tend to slide along their outermost surfaces, with the actual faces of the surfaces rarely making contact with each other. Liquids are rarely good boundary lubricants. The best boundary lubricants are solids with long chains of high inter-chain attraction, low shear resistence so as to slip easily, and a high temperature tolerence. The boundary lubricant should also, obviously, be able to maintain a strong attachment to the surfaces under high temperatures and load pressures.