Break in and ZDTP/ZDDP

[Al]

There is an article in July 03 Lubrication Engineering (STLE) which indicates that ZDTP is highly effective in assisting the break-in process.

That begs the question-might not Amsoil with its higher Zinc content be a superior break-in oil?? And now that Zn levels are less than 1000 ppm are we hurting ourselves during the break-in period. My guess is not, but who knows.

Also is there a difference between ZDDP and ZDTP

I know Mobil 1 calls their Zn/Phos ZDTP .

The article was to advanced for me- Hopefully Molakule has seen the article and can translate it

 

[MolaKule]

Al,

I am expecting the LE mag tomorrow, so I haven't seen the paper as yet.

However, ZDDP, or ZDP, or ZnDTP, or ZDTP is the common name for the above and is chemically Zinc-Dialkyl-Dithio-Phosphate, an anti-oxidant and anti-wear agent.

New zinc organometallic additives have appeared on the scene that have reduced phosphorus content, such as Zinc-diamyl-dithio-carbamates, or ZDTC, similar in structure to Moly DTC. ZDTC's are also metal deactivators, copper corrosion inhibitors, and anti-wear agents.

I will attempt to respond as soon as possible.

 

[Al]

Thanks,

like I said-too deep for me.

 

[MolaKule]

I will be posting a summary of this article in the Interesting Articles section.

 

[quadrun1]

Zinc, it's not just for fighting colds anymore!

Based on the UOAs here, Toyota and Honda seem to prefer lots of moly during break-in.

For North America in non-M engines, BMW uses the same oil for break-in as their service fill: Castrol TXT Softec 5W-30.

For both break-in and service fill, SAAB's been using semi-syn 5W-30 and fully-syn 0W-30 with diesel-oil level of additives (more zinc and phosphorus), despite selling only gasoline-powered cars here in the U.S.

Jason