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 Engine Oil Reviews/Technical talk v2, Everything Automotive lubricants/fluids

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zDestinyx
post Jul 13 2025, 01:52 PM

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QUOTE(Quazacolt @ Jul 4 2025, 06:52 AM)
Proton Iriz CamPro engine after numerous Sepang track days and Touge
https://www.quazacolt.com/uoa/others/202412...etronas3000.png
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second follow up sample
https://www.quazacolt.com/uoa/others/202505...etronas3000.png
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My own GT86 with Valvoline SynPower Eco 0w20 and now with Tan Chong MoS2 additives ,
Moly (MoS2) very slight increase with continual usage
https://www.quazacolt.com/uoa/gt86/20250311...ineEco_MoS2.png
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Finally! first Mobil 1 SHC 75w90 gear oil sample!
https://www.quazacolt.com/uoa/gt86/20250115...0_Mobil1SHC.png
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My First LSD sample, using Motul Gear 300 LS 75w90
https://www.quazacolt.com/uoa/gt86/20250115...ulGear300LS.png
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no Q&A yet as Blackstone labs getting even slower, lol.
not to mention various typos and errors compared to information provided from my oil slips. (all 3 reports also contained typos and errors)
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I am actually quite surprised seeing that Syntium 3000 actually consists of Molybdenum. Seems like it becomes an important friction modifier for engine oil nowadays for improving fuel consumption and reduce wear.

Notice the previous sample of Valvoline SynPower 0w20 has more insoluble (0.4% vs 0.2% in the latest UOA). Possible is it due to the MoS2 additive? As MoS2 itself is a solid lubricant and the particles are just suspended in the base oil of the additive. Hence, under the continuous usage of the oil and the MoS2 gone through heat and pressure, it coated to the internal parts of the engine and breaks down from its solid counterpart. End up the increases in Moly level and reduce in insoluble content.

Just wonder if the sulphur from the MoS2 will affect the TBN number or not? As the test doesn't show the TBN and TAN.
zDestinyx
post Jul 13 2025, 03:32 PM

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QUOTE(Quazacolt @ Jul 13 2025, 02:46 PM)
Molybdenum is very popular these days because it's one those additives that doesn't have any obvious detrimental issues.

The only problem is that they aren't like zinc or phosphorus that's able to cling to metal surfaces. Hence their benefits are also very limited.

Another "issue" is how there's differences in MoS2 similarly to base oil
https://bobistheoilguy.com/forums/threads/w...ar-moly.314523/
I'm not sure if there's any tests or analysis that can determine or differentiate the various MoS2 types.
(Base oil you can)

The insolubles are negligible and it's apart of my previous Q&A and recent Q&A/notes
Regardless, you can also refer to
https://www.blackstone-labs.com/all-about-insolubles/
Basically, the MoS2 are smaller microns than the test, as well as oil filter. (Otherwise they are all caught by the filter and just clog it up)

I've got enough data of TBN so didn't pay extra for it
But through experience and also my previous report, no it doesn't affect TBN
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I think the Moly appears in modern engine oil nowadays are so called "soluble moly" or "organic moly" such as MoDTC or MoDTP.
Meanwhile, MoS2 considers as insoluble moly which is why it is in grey colour due to the nature of the solid particles suspended.
That's what my limited understanding on Moly.

The MoS2 actually binds to the metal through the sulfur atom, but perhaps not as strong as ZDDP binding to the metal parts of engine.
https://www.imoa.info/molybdenum-uses/molyb.../lubricants.php
zDestinyx
post Jul 20 2025, 02:00 AM

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QUOTE(Quazacolt @ Jul 13 2025, 10:03 PM)
I don't have any way to tell as sulphur is not tested for all my samples from Blackstone labs.

I would like to think Sulphur is added minimally considering the potential issue on oil becoming acidic (faster), and/or cat con poisoning.

And of course, the EU low SAPS agenda.
But I could be wrong since the MoS2 engine oil additive I've been using (also 2 sample reports done, 3rd Sample with Penrite and Sepang track day is coming very soon!) is by Tan Chong, and may very well ignore any EU regulations, despite it's been OEM/produced by Liqui Moly Germany.

Yes the additive is indeed in very dark grey/black colour. Visibly very powdery.
No idea with Bardhal. Never looked into that brand.
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Noted. Thanks for your input.

Just curious, I notice Valvoline Malaysia doesn't seem to bring in SynPower Eco 0w20. The one that able to be found from official is just SynPower 0w20 without the Eco labelling.
Mind to share where you get it from? Kind of interested in their oil especially the new Restore and Protect. Too bad, seems like Valvoline Malaysia not yet bring it in.
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