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Mobil 1 ESP 5w30 Noack is 7.9% #5025212 02/27/19 09:38 AM
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Patman Offline OP
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I sent an email to ExxonMobil to find out the Noack value for their new formula of Mobil 1 ESP 5w30 and they responded back that it's 7.9%. The old version, called ESP Formula 5w30 supposedly had a Noack of 5.6% but that was through independent testing so it's unclear whether or not that number could be trusted.

When my supply of ESP Formula 5w30 runs out (I have enough for the next 5 oil changes in the Corvette) I think I will start using this new 5w30 ESP (Canadian Tire is now starting to stock it in 1 quart bottles at $16.29 each)


2018 Corvette, 14k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 151k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,117k, GC 0w40 & Fram Ultra

Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025221 02/27/19 09:44 AM
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1JZ_E46 Offline
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Wow that’s great to hear. Very low for a 5W-30. If only it were easier to find for a decent price.

XOM has always been great at answering technical questions via email.


2019 Tesla Model 3 SR+
2016 Countryman S: Castrol 0W-40
Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025255 02/27/19 10:25 AM
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I'm very surprised that Patman got an answer....that's still better than M1 5W30 AP if we trust the PQIA's 8.5%.
I think the Russian Oil Club and Amsoil (big comparison test ad) both had M1 5W30 ESP Formula at close to 6%, never saw any figure from XOM on that one.


2014 Forester XT, 105000 miles
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Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025301 02/27/19 10:58 AM
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Patman Offline OP
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I have had a difficult time getting info from ExxonMobil in the past (they usually don't respond at all!) and this one got bounced from one department to another before I finally got an answer. The first guy to answer said that they usually don't publish that info but if I really wanted to know the answer he would forward the email to another department (of course I wanted the answer, why else would I email them?) Before he forwarded it to the right department though, he kept asking me questions (like what car do I want to use it in, etc.)

Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025451 02/27/19 01:05 PM
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Great info, thanks Pat!


'18 Caravan - 40k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: StevieC] #5025466 02/27/19 01:14 PM
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Patman Offline OP
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Originally Posted by StevieC
Great info, thanks Pat!


No problem! What I don't understand is that if they have this info from their testing, why not share it on the technical data page on their website? Even if not many people know what it means, I'm sure few people know what HTHS means also and they always include that info.

Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025472 02/27/19 01:16 PM
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edyvw Online Content
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Originally Posted by Patman
I sent an email to ExxonMobil to find out the Noack value for their new formula of Mobil 1 ESP 5w30 and they responded back that it's 7.9%. The old version, called ESP Formula 5w30 supposedly had a Noack of 5.6% but that was through independent testing so it's unclear whether or not that number could be trusted.

When my supply of ESP Formula 5w30 runs out (I have enough for the next 5 oil changes in the Corvette) I think I will start using this new 5w30 ESP (Canadian Tire is now starting to stock it in 1 quart bottles at $16.29 each)

It seems generally that NOCAK went up a bit compared to VISOM base they used before.
Still, great news, and good NOACK value.


15' Toyota Sienna AWD (Mobil1 5W30 EP+OEM filter).
11' VW Tiguan 2.0T (Castrol 0W40+MANN filter)
Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Virtus_Probi] #5025473 02/27/19 01:17 PM
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Originally Posted by Virtus_Probi
I'm very surprised that Patman got an answer....that's still better than M1 5W30 AP if we trust the PQIA's 8.5%.
I think the Russian Oil Club and Amsoil (big comparison test ad) both had M1 5W30 ESP Formula at close to 6%, never saw any figure from XOM on that one.

This oil will be better than anything ILSAC-GF5.
That 6% was old VISOM based. But that one had some serious numbers in other categories too. IMO new version seems bit watered down.


15' Toyota Sienna AWD (Mobil1 5W30 EP+OEM filter).
11' VW Tiguan 2.0T (Castrol 0W40+MANN filter)
Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: edyvw] #5025482 02/27/19 01:23 PM
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Patman Offline OP
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Originally Posted by edyvw

This oil will be better than anything ILSAC-GF5.
That 6% was old VISOM based. But that one had some serious numbers in other categories too. IMO new version seems bit watered down.


I'm still a little bit bummed about that, I do love the specs on the ESP Formula 5w30, one of the ones that really stands out in my mind is the 0.6% Sulfated Ash.

But like I mentioned, I do have a good supply of the original formula still, and still plan on buying up more of it as I travel to different Canadian Tire locations (I have cleaned out the stock from all of the CT locations within a half hour radius of my house and will expand my search to further locations in the future)


2018 Corvette, 14k, M1 ESP Formula 5w30 & NAPA Gold
2006 Civic EX Coupe, 151k, PUP 5w20 & Fram Ultra
2010 BMW 328i X-Drive,117k, GC 0w40 & Fram Ultra

Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: Patman] #5025484 02/27/19 01:25 PM
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Originally Posted by Patman
Originally Posted by StevieC
Great info, thanks Pat!


No problem! What I don't understand is that if they have this info from their testing, why not share it on the technical data page on their website? Even if not many people know what it means, I'm sure few people know what HTHS means also and they always include that info.

It seems silly to me as well.


'18 Caravan - 40k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: Mobil 1 ESP 5w30 Noack is 7.9% [Re: 1JZ_E46] #5025701 02/27/19 04:36 PM
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Originally Posted by 1JZ_E46
Very low for a 5W-30.

Not really, given that this is a non-ILSAC 5W-30 and it has a thicker base oil, hence the lower NOACK. There is nothing special about it.

According to MSDS, it's about 1/2 GTL with a dash of PAO (less than 5%). As we know, it also has some ester (2 - 10%). The rest would be Group III.

The older version (ESP Formula) may have had more ester and/or an even thicker base oil, explaining its lower NOACK. It had no GTL though, only the Visom Group III+.


1985 Toyota Corolla LE, 4A-LC engine, ~ 276,000 M
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