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TAN 8.x looks too high to me. SAE paper on Dex IIIH: The specification on the GMOT is that delta TAN (difference in total acid number compared with the fresh oil) at the end of the test does not exceed 3.25 while the specifications on GMCT are that delta TAN cannot exceed 2.0.

Hi, See below Blackstone's VOA results of AMSOIL's CVT virgin fluid: PPMs: B 420 Ca 733 Mg 4 Si 3 Na 4 P 840 Zn 18 KV100 7.3 Flash Point 390F TAN 2.5 Additive pack looks quite strong but could it be the reason for higher TAN than any other sent to public, like 1.5 or less? Probably it...

EFO probably is not twice better but AZF 0W-40 is for sure far better than Edge or M1 because of Amsoil own top quality additive pack like all Signature Series oils have - I would use AZF in twin turbo engines like AMG or BMW instead of OEM 0W-30 / 5W-30. EFO will probably be listed soon as...

Regarding 5W-30, Amsoil AEL low saps had Noack 7,8% and HTHS 3,7 in gray label and now it is 10% what is MB229.51 max allowed. Amsoil AFL 5W-40 mid saps also had Noack 7,4% in gray label and now it is 10% too but MB229.51 listed. Approvals cost money so blenders use cheaper base stocks...

5W-40 EFM is MB 229.5 approved so if EFO uses the same additives pack (I suppose third party already MB approved) then it will be listed too: https://bevo.mercedes-benz.com/bevolisten/229.5_de.html

Their 0W-40 AZF looks very nice but the new EFO 0W-40... with so high Noack is just a copy of 5W-40 EFM - exactly the same specs but a 0W-40 (reason for even higher Noack than the EFM) + higher viscosity index - typical for 0W-40. Many cheap oils like this one in Europe. Disappointing..

Sometimes they present engine test of the SS oils results too - the ones used in a process of API / ILSAC certification. http://www.amsoil.com/lit/g3115.pdf http://www.amsoil.com/lit/g3320.pdf 4 ball wear test is not a key (agree - COF would be more technical) but shows a difference even...

Originally Posted By: wemay Originally Posted By: Quattro Pete Originally Posted By: A_Harman Looks like direct competition to M1 0w40. Not until they officially meet all the same mfg specs that M1 0w-40 meets. I agree. It cannot be placed in the same class if not formally meeting the specs...

0W-40 SS should perform far better than old fashioned Liqui Moly Synthoil 0W-40 with much lower TBN<10, HTHS 3.6, missing friction modifier, much lower PAO content (about 20-40% now) and Noack about 9%.

Approving meens freezing the current specification (including base oils) and their Signature Series (SS) oils are being 'fine tuned' quite frequently - it is their big adventage. Even when they are blending more and more mineral base stock like 10-30% in the new 0W-40 or 30-60% in 0W-20 - 10W-30...

I suppose AMSOIL guys would easily develop great 0W-40 Signature Series one too with Noack The same with 10W-60 for e.g. older BMW M - having good 5W-50 AMR already and great base of the new 10W-60 Dirt Bike - just a question of business case in my opinion ;-) Pablo, do you know the new Dirt...

Originally Posted By: ofelas wlyszkow - "dirty zddp load" ? How exactly does that affect viscosity or cold temperature performance ? Not related to CCS. 'Dirty' I mean deposit control issues. If you go to this paper you will see how clean engine (and still very well protected) their Signature...

Better real synthetic base stock and high VI can do that and it all even with evaporation under good control. Really impressive parameters, without dirty zddp load like most 5W-50 'sport' 'rally' 'race' etc. Waiting for it in Poland!

In fact the 5W-50 AMR with its 5000cP flows better at -30C than all the rest of AMSOIL 5W-20/30/40 oils XL, OE, EU spec (except the ASL of course). High VI helps too. I wonder why not rated ACEA A3/B3/B4, Porsche A40 etc?

Originally Posted By: Pablo The new 5W50 has the following ZDDP level; PHOSPHORUS 772 ZINC 847 So it seems to be typical Signature Series add pack with over 3600 calcium, about 150 moly and 230 boron. Very good and proven formula! I hope it will be so shear stable too.. if not just the...

In fact AR9100 is based on nanotechnology potassium borate on ester matrix - much better technology than just hBN or even nano hBN and it is water resistant. They have AR9200 which is organic (not cheap synthetic one) 70nm nano WS2 PAO based oil additive but their top friction modifier is...

Originally Posted By: 67King You are claiming your street car lost 45% of its TBN? Does that TBN align with the additive concentration to you? It darn sure doesn't me. I've only seen one other oil that becomes that acidic that quickly, and it only has 20% as much calcium as what is shown in this...

Originally Posted By: 67King To my knowledge, WS2 powder is comprised of particles that are an order of magnitude larger than the NT additive Millers uses, and powder is not to my knowledge a fullerence. Calling WS2 powder "nanotechnology" would be analogous to calling graphite powder or soot...

Originally Posted By: 67King When you contacted me in August asking detailed info, I sent the info to Millers, as I was suspicious. The reply I got was: "Our guy in Poland has been contacted by the same person who he knows privately to be the distributor of Amsoil and other lubricants, fuel...

Originally Posted By: 67King Wojtek - I know from e-mails forwarded, and sent directly to me from [email protected] that you are a dealer of Amsoil and other lubricants, and I know that my counterpart in Poland has had a history in dealing with you. I am not a dealer of any lubricants...