Torco 5/20 too thin ?

Messages
12
Location
Tulsa
I am still a little fanatic about these 20 weight oils . I went to a Honda site and saw that the 5/20 was only a 7.3 at 212 F . Because of it being so thin would it probably have a greater amount of moly to protect under extreme conditions ? It is thinner by far than other 20 weights I have been looking at .
 

Jay

Messages
1,607
Location
Idaho Falls, ID
HTHS viscosity is more important than kinematic viscosity if you want to compare how thick or thin an oil is in a working engine. Mobil 1 0w-20 is the thinnest oil I've seen in that respect, with a HTHS of 2.61cP--right at the bottom limit of 20-weight.
 
Messages
463
Location
Palatine, IL
Can the Torco racing oils (SR-5) be used in street vehicles, and for extended intervals? It is my understanding that other racing oils, such as RedLine and Royal Purple, lack detergents required for street use?
 

cvl

Messages
150
Location
Indiana
Torco's SR-5 oils only have TBNs of 5.2, so they're not going to work well with extended drains like the other synthetic 20wts.
 
Messages
311
Location
3rd planet from the Sun
Here,s the response I got from Torco regarding HTHS #'s for the SR-1 lineup: Scott, Unfortunately we have not made available High temperature High Shear figures for our SR-1 line up. It is very very expensive and does not tells us enough additional info to justify spending more money on that form of testing. Thanks Eric Torco Racing Oils So, looks like the jury is still somewhat out for Torco. I'd really like to see this number so as to compare it to Redline. S
 
Messages
8,937
Location
SC
quote:
Originally posted by Scotto: Unfortunately we have not made available High temperature High Shear figures for our SR-1 line up. It is very very expensive and does not tells us enough additional info to justify spending more money on that form of testing.
[LOL!] [LOL!] [LOL!] [LOL!] [LOL!] Probably one of the single most important indicators of how well an oil is constructed and they can't justify it? [Roll Eyes] Someone posted awhile back asking what "snakeoil" is. In the next edition of the Oxford English Dictionary, I'm sure you will find "Torco" given as an example under the entry. [Big Grin]
 
Messages
311
Location
3rd planet from the Sun
Looks like I'll be doing a uoa as that will be the most reliable method of determining any wear prevention value. I must say, I am a bit disappointed in a company that says it doesn't have HTHS #'s for there oils. I'm even less comfortable since I'm running it in car right now. Live and Learn, as they say, Scotto
 
Messages
8,756
Location
RI
SAE J300 requires at least a 2.6 high-shear/temp number for a SAE 5w20 oil. U/VOAs are needed to make any judgement calls on oil.
 
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