What is the best anti wear additive in diesel motor oil?

[Redhawk454]

What is the best anti west additive in diesel motor oil?

Phosphorus? Zinc? Moly? Boron?

I’ve seen on the HDEO’s that one oil might have a LOT of moly and boron but kinda meh levels of phosphorus or zinc.

And then some HDEO’s have a lot of phosphorus and zinc but meh moly and boron. Or no moly and a lot of boron

 

[MolaKule]

What is the best anti wear additive in diesel motor oil?

A combination of various chemistry.

Phosphorus? Zinc? Moly? Boron?

I’ve seen on the HDEO’s that one oil might have a LOT of moly and boron but kinda meh levels of phosphorus or zinc.

And then some HDEO’s have a lot of phosphorus and zinc but meh moly and boron. Or no moly and a lot of boron

There a million different combinations of chemistrys one can use in a formulation.

 

[SureshR]

Phosphorus or Sulphur given that most every hard metal out there’s phosphate or sulphide is what gets used for wear protection. As @MolaKule says the chemistry will vary widely for much the same result.

 

[56Cummins]

I look for the ford spec, they like the phosphorus.
https://bobistheoilguy.com/forums/t...ent-for-heavy-duty-diesel-engine-oils.360833/

 

[MolaKule]

I look for the ford spec, they like the phosphorus.
https://bobistheoilguy.com/forums/t...ent-for-heavy-duty-diesel-engine-oils.360833/

ZDDP ester molecules are the main source of Phosphorus which includes Phosphorus, Zinc, and Sulfur atoms. ZDDP esters act as Anti-wear and anti-oxidant agents.

There ARE other Anti-wear and anti-oxidant agents that may be incorporated in a formulation as well.

Is there a specific question here?

 

[kschachn]

ZDDP ester molecules are the main source of Phosphorus which includes Phosphorus, Zinc, and Sulfur atoms. ZDDP esters act as Anti-wear and anti-oxidant agents.

There ARE other Anti-wear and anti-oxidant agents that may be incorporated in a formulation as well.

Is there a specific question here?

Yes, people focus on elements (probably due to the prevalence of spectrographic analyses) but it's always a compound, not bare elements that are used and are functional.