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Mobil 1 FS 0W40 API SP
- Thread starter CivicFK2TypeR
- Start date
Sorry if this was posted before. I couldn't locate it but I had thought I posted it here somewhere.
So Mobil appears to be removing esters from their oils and from my old comment posted here, they found something unique to replace it.
The oil is claimed as: API SP; ACEA A3/B4; MB-Approval 229.3/229.5; VW 502 00/505 00; BMW Longlife-01; AAE (STO 003) Group B7; FORD WSS-M2C937-A; FIAT 9.55535-M2; Porsche A40; AVTOVAZ (Lada Cars); NISSAN Genuine Performances/Co-label.
1) The viscosity of the oil, as befits SAE 0W-40. A high viscosity index of 181 indicates that the oil works in a very wide range of temperatures, it is fast at low temperatures, and provides a fairly high viscosity at high temperatures. (if compared with oils 10W-40, 5W-40, etc.). This is a universal property of 0W-40.
2) Pour point -51C - here we could not do without PAO synthetics. It really exists, as well as GTL base oil. This can be seen in the IR spectrum and MSDS documentation. The oil copes well with frosts, it can be poured in the northernmost regions of Russia.
3) The viscosity of simulated cold cranking by a starter, CCS at -35C = 5300mPas is excellent. Mobi1 quickly spins in low temperatures, the main thing is that the battery does not freeze, it often mimics the solidified oil - it turns slowly, as a result, the owner thinks that he has a fake or such bad oil.
4) Despite the fact that we have 0W-40 made on low viscosity base oils, Mobil1 FS gave NOACK = 10% - this is a good result. The oil meets the declared specification of Mercedes Benz 229.5, where NOACK should be no higher than 10%. This was done due to PAO synthetics, GTL, polymer thickener (yes, yes, it also affects the final NAOCK), and thoughtful weight distribution of base oils. Of course, if you have lacunae on the surface of the cylinder, stuck rings, shrunken valve seals - no oil with excellent NOACK will help, you need a capital! Everything that gets into the combustion chamber burns out! But in general, oil is minimally consumed for evaporation and is not prone to increased consumption.
5) Base number = 12.78 - very high. Good detergent properties. Margin for shift intervals, in case the oil change is delayed. There is something to neutralize acids from not very high-quality sulfur fuel. It should work well in the area of the piston rings => neutralize acids => so that deposits do not occur => so that the rings do not lie. (in addition to this, according to the IR spectrum, Mobil still has a lot of dispersants, at the level of medium-ash Longlife oils).
6) Flash point = 231C - normal, for 0W-40 it is generally good. Of course, you can make the oil completely on PAO synthetics, then it will be, for example, 245C.
7) In the past, we have criticized the Mobil1 FS series for being too sulphate ash. It was 1.5% and was not quite suitable for modern engines. Now the ash content = 1.11% - for full ash oil, with very high detergent neutralizing properties, this is a very good result. Mobil 1 is now safe for the newest engine models where full ash oil is recommended (or desired).
8) Well, the minimum sulfur content = 0.200% - this means pure base oils and a modern additive package.
9) Infineum P6780 additive package (although the formulation may have a different code name for itself). Infineum's latest development. There is a friction modifier based on organic molybdenum - it reduces friction, noise, a little antioxidant, a little protects against wear. Dispersants based on borated succinimides - bind contaminants and take them with them when draining the oil. And also, they do not allow them to stick together in deposits. And also, they improve the solubility of additives. Detergent neutralizing additives based on magnesium and calcium - a lot, greasy. And the main anti-wear additives are ZDDP, based on phosphorus and zinc. Mobil1 FS has always had greasy additive packages, this version is from the same opera.
From Racecar Engineering Mag (2021)
‘To further improve the sustainability, we have adjusted the chemistry of our base stocks. The base stocks are the most significant percentage of engine oil by volume. We challenged ourselves to see if we could use environmentally friendlier things at the pinnacle of motorsports. Over 25 per cent of the base oil used in Mobil 1‘s Formula 1 race engine oil this season is bio-based content. Environmental formulations rarely coincide with high performance, but here we have proved that it does. In fact, in the case of the engine oil that Mobil 1 developed for the with the Red Bull Technology Group Formula 1 teams on the grid in 2021, it enhances it.’
So Mobil appears to be removing esters from their oils and from my old comment posted here, they found something unique to replace it.
The oil is claimed as: API SP; ACEA A3/B4; MB-Approval 229.3/229.5; VW 502 00/505 00; BMW Longlife-01; AAE (STO 003) Group B7; FORD WSS-M2C937-A; FIAT 9.55535-M2; Porsche A40; AVTOVAZ (Lada Cars); NISSAN Genuine Performances/Co-label.
1) The viscosity of the oil, as befits SAE 0W-40. A high viscosity index of 181 indicates that the oil works in a very wide range of temperatures, it is fast at low temperatures, and provides a fairly high viscosity at high temperatures. (if compared with oils 10W-40, 5W-40, etc.). This is a universal property of 0W-40.
2) Pour point -51C - here we could not do without PAO synthetics. It really exists, as well as GTL base oil. This can be seen in the IR spectrum and MSDS documentation. The oil copes well with frosts, it can be poured in the northernmost regions of Russia.
3) The viscosity of simulated cold cranking by a starter, CCS at -35C = 5300mPas is excellent. Mobi1 quickly spins in low temperatures, the main thing is that the battery does not freeze, it often mimics the solidified oil - it turns slowly, as a result, the owner thinks that he has a fake or such bad oil.
4) Despite the fact that we have 0W-40 made on low viscosity base oils, Mobil1 FS gave NOACK = 10% - this is a good result. The oil meets the declared specification of Mercedes Benz 229.5, where NOACK should be no higher than 10%. This was done due to PAO synthetics, GTL, polymer thickener (yes, yes, it also affects the final NAOCK), and thoughtful weight distribution of base oils. Of course, if you have lacunae on the surface of the cylinder, stuck rings, shrunken valve seals - no oil with excellent NOACK will help, you need a capital! Everything that gets into the combustion chamber burns out! But in general, oil is minimally consumed for evaporation and is not prone to increased consumption.
5) Base number = 12.78 - very high. Good detergent properties. Margin for shift intervals, in case the oil change is delayed. There is something to neutralize acids from not very high-quality sulfur fuel. It should work well in the area of the piston rings => neutralize acids => so that deposits do not occur => so that the rings do not lie. (in addition to this, according to the IR spectrum, Mobil still has a lot of dispersants, at the level of medium-ash Longlife oils).
6) Flash point = 231C - normal, for 0W-40 it is generally good. Of course, you can make the oil completely on PAO synthetics, then it will be, for example, 245C.
7) In the past, we have criticized the Mobil1 FS series for being too sulphate ash. It was 1.5% and was not quite suitable for modern engines. Now the ash content = 1.11% - for full ash oil, with very high detergent neutralizing properties, this is a very good result. Mobil 1 is now safe for the newest engine models where full ash oil is recommended (or desired).
8) Well, the minimum sulfur content = 0.200% - this means pure base oils and a modern additive package.
9) Infineum P6780 additive package (although the formulation may have a different code name for itself). Infineum's latest development. There is a friction modifier based on organic molybdenum - it reduces friction, noise, a little antioxidant, a little protects against wear. Dispersants based on borated succinimides - bind contaminants and take them with them when draining the oil. And also, they do not allow them to stick together in deposits. And also, they improve the solubility of additives. Detergent neutralizing additives based on magnesium and calcium - a lot, greasy. And the main anti-wear additives are ZDDP, based on phosphorus and zinc. Mobil1 FS has always had greasy additive packages, this version is from the same opera.
From Racecar Engineering Mag (2021)
‘To further improve the sustainability, we have adjusted the chemistry of our base stocks. The base stocks are the most significant percentage of engine oil by volume. We challenged ourselves to see if we could use environmentally friendlier things at the pinnacle of motorsports. Over 25 per cent of the base oil used in Mobil 1‘s Formula 1 race engine oil this season is bio-based content. Environmental formulations rarely coincide with high performance, but here we have proved that it does. In fact, in the case of the engine oil that Mobil 1 developed for the with the Red Bull Technology Group Formula 1 teams on the grid in 2021, it enhances it.’
- Joined
- Apr 15, 2023
- Messages
- 212
In two weeks I will place a new uoa of this oil from my car here. For me one of the best oils for my engine.
I didn't realize it was that high.
CK-4 Diesel oil's are <1% so I think the fact it's over that percentage shows it's a very robust oil w/plenty of additive's needed for both Diesel & Gasoline (Non HD light duty vehicles).
I like the lower sulfur idea. I think that it was necessary to have it in larger amounts when using high sulfur fuel but no longer need as much if we're using ULSG now.
I just sent off a UOA with almost 8,500 miles on the 5w-40 FS version of this oil & as far as I'm aware it's the exact same additive package as the 0w-40 FS. I do have the 0w-40 FS lined up to use next though.
Most German thing ever to take him literally
Kurtz und KnappLiked that video.
That really got me curious about the X4 that replaced the X3. That video really showed the viscosity consistency on the X3 and also wonder if they kept the esters in there on X4.
According to this VOA the X4 has an oxidation value of 38.5, indicating it still has esters.
https://bobistheoilguy.com/forums/attachments/esp-x4-voa-webp.255042/
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Thanks! Good deal, I think I remember seeing that now.
I took the idea from the X3 thread about the Autozone deal but it seems to not offer the old 5 quart "Bottles" offer right now so no combo discount. Hopefully they'll bring it back so I can have a good reason to buy some.
Yeah I think they stopped that on the 1st of this year. The discount still applied when I bought five, 1 quart bottles and filter during last week of December. Too bad they stopped doing it.I took the idea from the X3 thread about the Autozone deal but it seems to not offer the old 5 quart "Bottles" offer right now so no combo discount. Hopefully they'll bring it back so I can have a good reason to buy some.
- Joined
- Jul 29, 2022
- Messages
- 164
I agree. The esp has been the best looking off the shelf oil I’ve seen for many applications.
I’m bringing this up because of the discussion of the lab’s oxidation measurements in your UOA thread. Those measurements appeared untrustworthy. Further supporting evidence for that is that the first three VOAs in this thread are for ESP X3 0W-40. That oil contains significant amount of esters, causing believable oxidation measurements by other labs in the 30s. Suppose the lab you used does produce different oxidation values than American labs. In general, that could still provide useful data, but it is not useful if no matter what oil you give it, used or not, with esters or not, and the answer is always 1, 2, or 3.
