'Severely hydrotreated mineral oils'

[LordNilesStandish]

I'm trialling HDEO's for mixed fleet use.
Latest says in literature either semi synthetic (on the drum) or full synthetic (on the website).
MSDS lists 2 ingredients:
Severely hydrotreated mineral oils >60%.
And complex additive blend 10 - 30 %.

It doesn't bother me either way, just curious.
What is it?
Group II, III or II+? It's probably a blend.

 

[RoadDukie]

Door number 2...

Is this a test?

 

[ripcord]

Severely hydrotreated base oils would probably be all Group III. Hydrotreating is when hydrogen is injected into the fractions when refining crude. Severeness refers to the added heat and pressure used to improve the process which aids in cracking all the undesirable compounds which yields Group III stocks.

 

[LordNilesStandish]

Severely hydrotreated base oils would probably be all Group III. Hydrotreating is when hydrogen is injected into the fractions when refining crude. Severeness refers to the added heat and pressure used to improve the process which aids in cracking all the undesirable compounds which yields Group III stocks.

Thanks, good to know. Should do the job nicely then.

 

[kschachn]

Base Groups I-III are determined by performance (VI, saturates, sulfur) rather than production method. In fact, the production method is specifically excluded.

And any Group designation with a "+" is a marketing term.

 

[proffittmarke]

I'm trialling HDEO's for mixed fleet use.
Latest says in literature either semi synthetic (on the drum) or full synthetic (on the website).
MSDS lists 2 ingredients:
Severely hydrotreated mineral oils >60%.
And complex additive blend 10 - 30 %.

It doesn't bother me either way, just curious.
What is it?
Group II, III or II+? It's probably a blend.

Group III+

 

[wpod]

They are good oils.

 

[kschachn]

Group III+

No they are Group III all day long if they meet the performance requirements of that designation.

 

[SR5]

Check out the BITOG introduction by Mola. It’s excellent.

MolaKule: “From a processing standpoint, modern Group III base oils are manufactured by essentially the same processing route as modern Group II base oils. Higher V.I. is achieved by increasing the temperature or time in the hydrocracker. This is sometimes collectively referred to as the “severity.” Alternatively, the product V.I. could be increased simply by increasing the feed V.I., which is typically done by selecting the appropriate crude. “

A Review of Mineral and Synthetic Base Oils - Bob is the Oil Guy

OP: “Severely hydrotreated”

As Mola says, the word severity/ severely points to Group-III.

 

[kschachn]

Check out the BITOG introduction by Mola. It’s excellent.

MolaKule: “From a processing standpoint, modern Group III base oils are manufactured by essentially the same processing route as modern Group II base oils. Higher V.I. is achieved by increasing the temperature or time in the hydrocracker. This is sometimes collectively referred to as the “severity.” Alternatively, the product V.I. could be increased simply by increasing the feed V.I., which is typically done by selecting the appropriate crude. “

A Review of Mineral and Synthetic Base Oils - Bob is the Oil Guy

OP: “Severely hydrotreated”

As Mola says, the word severity/ severely points to Group-III.

It helps when you understand that the designations for Group I, II and III base stocks are performance based and the method of manufacture is specifically excluded in the definition.

 

[weasley]

It helps when you understand that the designations for Group I, II and III base stocks are performance based and the method of manufacture is specifically excluded in the definition.

This.

A "severely hydrotreated" base oil is likely to meet the parameters of a Group III base oil, but it isn't a given.

And there's no such thing as Group III+.

https://www.api.org/~/media/files/certification/engine-oil-diesel/publications/anne-rev-03-25-15.pdf

See E.1.3.

 

[OVERKILL]

Base Groups I-III are determined by performance (VI, saturates, sulfur) rather than production method. In fact, the production method is specifically excluded.

And any Group designation with a "+" is a marketing term.

Yup, Mobil's EHC bases for example are marketed as "Group II+", while Shell's GTL as "Group III+", while both are just Group II and III officially.