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Thanks, I am familiar with this article. it's a matter of choice))) Results are typical for OCPs, but not for ”market general” sterene VIIs. Here results from oil-club.ru for Mobil 1 FS 5W-40. (sorry for Russian). Viscosity loss after 90 cycles 0,9%.

The viscosity loss depends on both VII type and its SSI (Shear Stability Index). OCPs have a typical SSI range from 24 to 50. Star styrene-diene VIIs have a typical SSI from 4 to 28. There is no OCP that can be better than a Star VII with SSI 4 even after 90 (or 120 or …) cycles.

In general yes. But Idemitsu Zepro 0W-20 has 11,4% of viscosity decrease and Shell Helix Ultra 5W-40 API SP has only 1,7%. https://www.oil-club.ru/forum/topic/50042-shell-helix-ultra-5w-40-api-sp-svezhee-shear-stability/#elControls_2062835_menu ”relatively little VII” does not always mean...

Since last month, the Russian oil-club.ru has been testing shear stability. KO method, 90 cycles. First 0W-20 results look very interesting https://www.oil-club.ru/forum/topic/50114-0w-20-shear-stability-test/

ZnDDTP- antiwear additive

I have test reports for 0W20 and 0W30 on the OM 646 engine, which is part of the MB 229.71 specification. Yes, 0W30 shows less wear. But both oils are far from the wear limit.

exactly. I would say that those two oils are based on the same additive technology with different base oils ratio. More Mobil VOAs are here https://www.oil-club.ru/forum/topic/919-масла-mobil-общая/ You can open hidden text and find out a list of products:

Hi all, Here you can see VOA from Russia https://www.oil-club.ru/forum/topic/32753-mobil1-esp-x2-0w-20-svezhee/ You can easily use Google to translate the test report) The same level of elements but TBN=8.76 and KV100=8.04. So results are adequate for 0w-20 MB229.71 VW508/509. I've heard that...

Originally Posted By: CATERHAM I'm not too impressed with the AW additive levels. No moly and just 686 ppm of Phos'. There are no requirements to have good fuel economy properties in ACEA C3. This oil with HTHS 3.5 is mainly for diesel cars with DPF.

Originally Posted By: Ssilverhaze Yes, it is mid saps 502,505,505.01 and MB 229.31 approved and meets several other specs. I had a good deal on the Ravenol and it is PAO based full synthetic, could not find any VOA or decent UOA so i decided to do my first oil analysis and become a proud BITOG...

Originally Posted By: Kelly99 Is this oil a group IV oil? I found this today at Canadian Tire. It is made in Belguim. I have a 2006 BMW which requires BMW LL-01 approved which this is. Any thoughts? I've been running Castrol 5w40 in the past and from doing a lot reading, realized it was not a...

Originally Posted By: DemoFly I'm surprised the TBN is still so high after 5600 miles. TBN retention of all oils in my engine Code: oil OCI,km TBN fresh oil TBN Used oil ASTM D 2896 ASTM D4739 ASTM D4739 Toyota...

Originally Posted By: Danno I would stick with TGMO 0W-20. Seems to work really well with your engine. I agree. Now I am om 5W-30 ACEA A5/B5 full SAPS oil but next OCI will be on 0W-20. I will try another 0W-20 from the market, may be Mobil or Idemitsu.

this castrol has only Ford approval. But basically Ford specs are based on API/ILSAC or ACEA specs plus some in-house tests or more severe limits of API/ACEA tests. You know Castrol has strategic partnership with Ford and I think this is Castrol decision to show only Ford 948-B on this oil. No...

UOA of this Castrol is here http://www.bobistheoilguy.com/forums/ubb...hla#Post3256929

This is my 6th UOA from 0 to 59600 km in Toyota Highlander. You can see all results of different lubricants in one table. First OCI's shows big number of wear metalls and Si, but it is usual situation for new Toyota engine 2GR-FE. The lowest wear was with TGMO 0W-20 (lowest viscosity among oil...

Originally Posted By: Mathson Is API base stock interchange guidelines also applicable to these formulations purchased from additive manufacturer? I think Yes. But You should have an agreement with additive company to use data set of original formulation. In addition Interchange guidelines do...

Originally Posted By: edyvw Just wanted to make a point that approval is not that expensive. Agree. But obligation to comply with the rules - that can be expensive

If redline wants to have VW 504/507 approval it should buy all components ( base oils, viscosity index improvers, additive package) that tested in original formulation. No possibilities to change anything in formulation. You should buy PAO, approved group III, expensive VII and Package with more...

Originally Posted By: Quattro Pete What is the cost of all these tests? From 2 000 000 to 3 000 000 USD)))) but this is about new development of "original" formulation sponsored by Infineum or Lubrizol, not oil companies.