List of oils by base-oil-quality index: a ranking

Gokhan

Thread starter
Messages
5,318
Location
Paramount, California
Originally Posted By: 4WD
So what are they saying here?
We are talking about additive packages sold by additive companies, not finished oils here. They aren't saying that Group II base stocks are made to be used as additive bases to be used by the additive companies for their additive packages. They mean that Group II is an "optimal" compromise as a base oil in a finished oil ("blend") for solubility and oxidation stability. As the article explains, while you go from Group I to Group IV, the solubility gradually decreases and the oxidation stability gradually increases. When you mix the additive base with the actual base oil, it will be diluted substantially and the solubility will decrease substantially. For this reason you want Group I for the additive base so that you start from the maximum solubility and even when it's diluted by the actual base oil, you have sufficient solubility.
 
Messages
28,129
Location
Regina, Saskatchewan, Canada
Originally Posted By: Gokhan
First and most, unless the test data is coming from PQIA, the BOQI value is not official. Second, to make things worse, Red Line didn't report a figure after the decimal point for NOACK. ASTM D5800-15a dictates that a single figure after the decimal point must be reported. They also reported the CCS with one significant figure and it's normally reported with three.
So, how many other oils have you tested this with known values? We already have anomalies in there that do say it's not working. Now, if you want to talk about Red Line's improper use of significant figures, where is your error analysis and why haven't you corrected Red Line's value to reflect the lack of certainty? Also, when posting stories, we do have to exhibit some caution. Trade magazines are not peer reviewed journals.
 
Messages
16,486
Location
...
A new thread here is showing major changes to the TGMO 5w-20. The moly has disappeared in favor of titanium. So one has to wonder if the 0w-20 has suffered the same fate? That would have a impact on the "BOQI" index. https://bobistheoilguy.com/forums/ubbthreads.php/topics/4158257/Toyota_5w20,_1996_Civic_1.6L_U#Post4158257
 

Gokhan

Thread starter
Messages
5,318
Location
Paramount, California
Originally Posted By: PimTac
A new thread here is showing major changes to the TGMO 5w-20. The moly has disappeared in favor of titanium. So one has to wonder if the 0w-20 has suffered the same fate? That would have a impact on the "BOQI" index. https://bobistheoilguy.com/forums/ubbthreads.php/topics/4158257/Toyota_5w20,_1996_Civic_1.6L_U#Post4158257
I don't think TGMO 5W-xx conventional has ever had any moly. So, nothing has changed. TGMO 5W-xx conventional could be the same as Mobil Super conventional, which also has titanium and sodium but no moly. TGMO 0W-20 SN synthetic is an entirely different oil than TGMO 5W-xx conventional. It has nothing to do with Mobil Super. It doesn't use sodium and it's rather generously packed with trinuclear moly because Toyota instructs ExxonMobil to do so as they want the highest possible MPG out of the 0W-20 grade, as TGMO 0W-20 SN synthetic is their standard flagship motor oil for newer vehicles that boast the highest fuel economy in the industry. See these UOAs: https://bobistheoilguy.com/forums/ubbthreads.php/topics/2767842/Toyota_5W/30,_4863_miles,_2011 https://bobistheoilguy.com/forums/ubbthreads.php/topics/2179650/Mobil_Super_5000_5w30_SN/GF5
 

OVERKILL

$100 Site Donor 2021
Messages
45,355
Location
Ontario, Canada
Originally Posted By: Gokhan
TGMO 0W-20 SN synthetic is an entirely different oil than TGMO 5W-xx conventional. It has nothing to do with Mobil Super. It doesn't use sodium and it's rather generously packed with trinuclear moly because Toyota instructs ExxonMobil to do so
Has anyone actually ever confirmed that the moly in TGMO is of the trinuclear type, or is this still just speculation?
 
Messages
43,650
Location
'Stralia
In the other thread I asked to see the paperwork for the direction from Toyota to Mobil on how their oil is to be built. Everything to date appears to be speculation... TGMO, we know NOTHING about it...that's what makes it so good.
 
Messages
9,118
Location
Virginia
Originally Posted by aquariuscsm
The Cannon Instrument Company chickadee is HOT!! laugh
I agree aquariuscsm smile She almost looks a bit like the lady from myth busters too.
 
Top