How many are using engine oil with Antimony?

not sure if anyone is using Antimony any more due to the SQ/GF-7 and for that matter Titanium maybe a thing of the past too , as these components are getting rather pricey, and moly and boron are the more prevalent offerings from the additive companys.
 
not sure if anyone is using Antimony any more due to the SQ/GF-7 and for that matter Titanium maybe a thing of the past too , as these components are getting rather pricey, and moly and boron are the more prevalent offerings from the additive companys.
Thank you for your answer.
 
You didn't provide a link to a website, how is he supposed to have looked at it? And what company is this?
An engineer first behavior is curiosity and questioning, that easy to find anything numeric nowadays with a little dedication.
Thank you very informative.
 
Oils are a balancing act, performance improvement in one area can negatively impact another, this is why extensive testing is done to ensure the efficacy of formulation changes and component selection. Dosing that carefully balanced chemistry with another component, be it an EP additive, FM, thickener, cleaner...etc. WILL have an impact on the performance of the product, and the odds of that impact being overwhelmingly positive are impossibly remote.

This is something I've discussed with Dave at @High Performance Lubricants quite extensively. Each additive package and base oil blend responds differently to different FM compounds and compound combinations. While a full-SAPS A40 additive package in a 0W-40 might respond best to a 60/40 blend of trimer/dimer moly and not respond well to additional augmenting with say titanium, an API SP/dexos additive package might respond best to a 10/80 blend of trimer/dimer moly and a 10% dose of titanium. Or a mid-SAPS C40 additive package in a 0W-30 might respond best to a 80/10 trimer/dimer blend with 5% tungsten and 5% antimony. I'm pulling these numbers out of my posterior, but the message here is that different suites of additives, in concert, respond differently to additional components and the base oils, PPD's, VII's and other components also influence this. That's what full formulation is all about.

Now, you are less likely to see some of these compounds used in OTS lubricants due to cost, and it's not unusual to see the same additive package recycled across different grades and base oil blends also due to cost. TEOST restricts moly use for example, as we've recently discussed, but in the context of your "best available oil", these restrictions and cost cutting aren't in play.
Thank you overkill, yes, you need to know some, like in many other areas...
 
Oups Patman, I have a group of full-time paid chemists Tribologist I am working with in my companies since the late 70's, since more than a decade I have been around I was thinking you did look at our website..., there are very respectable Tribologist here on I respect the required amount.
Please link your website, I’m always ready to learn. Thanks.
 
With all due respect to your 'team of chemists since the 70s,' your logic here is a textbook case of additive clashing.
You’re claiming a 'spectacular' fix for a mechanical tick by dumping a high-pressure (EP) Antimony booster into a finished Passenger Car Motor Oil (PCMO). Any actual Tribologist would tell you that modern oil is a delicate balance of competitive adsorption. By spiking the Antimony to 200ppm, you aren't 'enhancing' the oil; you’re forcing the Antimony to compete with the existing Moly and ZDDP for surface area.
Here’s the reality check:
The 'Tick' Fix: You didn't 'fix' the engine; you likely just muffled the sound with a high-ash sacrificial film.
Emissions & Deposits: Antimony is largely deprecated in modern gasoline engines for a reason—it’s hell on catalytic converters and performs poorly in TEOST (Thermo-Oxidation) testing compared to modern organic friction modifiers.
The Math: As JavierH19 pointed out, you're spending upwards of $150 on additives alone. If your 'team of chemists' is telling you that a $200 oil change involving a heavy-metal booster pack is superior to a properly formulated off-the-shelf HPL Supercar or Mobil 1 Full Synthetic, then they’re still living in 1978.
If you actually have a website or white papers from your company proving that this DIY 'Antimony Cocktail' outperforms a modern API SP formulation in a 5.0L Coyote engine, we’d love to see the data. Until then, it looks like you're just playing chemistry set with an expensive engine and hoping the 'placebo effect' keeps the lifters quiet.
 
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