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#4709522 - 03/28/18 12:02 PM
Mobil 1 5w30 ESP vs 0w40 ESP
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Registered: 05/27/02
Posts: 20274
Loc: Oakville, Ontario
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So as some of you know, there is a new dexos2 certified 0w40 Mobil 1 which is now the factory fill in 2019 Corvettes, and is backwards compatible to any prior Corvette engines that require a dexos certified oil. As I have mentioned in a couple of different threads now, it causes me to be interested in a couple of other dexos2 oils, but one in particular is Mobil 1's 5w30 ESP. And in looking at all of the technical data, it looks on paper like the 5w30 ESP might be a better choice than the 0w40 ESP. For instance, the HTHS of the 5w30 is higher (3.58 vs 3.53) Sulfated ash on the 5w30 is listed at 0.6, the 0w40 is listed as 0.8. And the flashpoint of the 5w30 is also higher, at 254C vs 234C for the 0w40. So if it turns out I can use the 5w30 ESP and retain my warranty, which of these two oils would you choose? Here is more info on both of these oils:   
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2018 Corvette (M1 5w30 & AC Delco PF64) 2006 Civic EX Coupe (M1 0w20 AFE & Fram Ultra) 2010 BMW 328i X-Drive (GC 0w40 & Mann)
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#4709530 - 03/28/18 12:13 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 10/09/14
Posts: 10568
Loc: Idaho
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0W-40. That is what I will be using the next oil change in my 2.7 Ford pick up.A wee bit thicker to help with any fuel dilution ets and not a whole lot thicker to cause higher than necessary pumping losses.
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Artificial intelligence is no match for natural stupidity, we shall prevail
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#4709547 - 03/28/18 12:23 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 05/27/02
Posts: 20274
Loc: Oakville, Ontario
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I'm also considering using the 5w30 ESP for my next oil change since I can buy it up here an Canadian Tire, and the 0w40 ESP won't be available in stores until probably the end of summer or early fall.
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#4709551 - 03/28/18 12:26 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 06/25/15
Posts: 3811
Loc: New England
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The only downside I see to the 5W30 ESP (assuming extreme cold performance is not critical) is that it has a low starting TBN due to being a very low SAPS oil, so it is not at all suited for longer OCIs except on very low sulfur fuel. Patman, do you know what the sulfur levels are for the gas you get in Canada? The small HTHS advantage of the 5W30 could be an argument for it being even better than the 0W40 ESP for a very high performance application.
M1 5W30 ESP was one of my choices before dexos1 Gen 2 oils came out, VOAs suggested to me that it should help mitigate LSPI and I liked the low SAPS, low NOACK loss, and high HTHS. I did notice that my car ran a bit hotter on it because it was thicker at temp than what I had been using and gas mileage may have suffered a bit, but not dramatically. I'd be OK with running it now, but prefer an oil that has actually been tested for LSPI performance and this stuff is quite expensive in the USA!
Edited by Virtus_Probi (03/28/18 12:26 PM)
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2014 Forester XT, 80500 miles Last Change; Valvoline Full Synthetic 5W30 d1G2 Tokyo Roki 15208AA170 filter
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#4709558 - 03/28/18 12:31 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 03/20/08
Posts: 5854
Loc: USA
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You can probably use any dexos2 with no problems  Is this move to 0w40/dexos2 for all Corvettes from 2019-on, or just the special variants like the Z06 and ZR1? Remember, even the previous supercharged C6 ZR1 still called for 5w30 dexos1. I see the XOM recommendation to back-spec the 0w40 to all corvettes since the dexos program first started, but honestly, that might not be a good idea for the way most Corvettes are actually driven. And the ones that actually do use some of the Corvette's performance capabilities have probably already been using 0w40, albeit not the ESP version. There are a few dexos 2 5w30 oils available, such as PP Euro L at Walmart for about $25/jug, Valvoline's MST 5w30 at Napa for about $9/qt, and I believe Amazon has a Castrol dexos2 5w30 as well. Along with the M1 ESP 5w30 mentioned in the OP. Remember that Pep Boys does charge extra for the ESP in their M1 oil change specials with the 5qt and filter. Valvoline's Synpower MST 5w40 is more widely available, and the same price as other Synpower grades. So this would probably be my choice for a Corvette requiring dexos2. (For the Cruze diesel which also takes dexos2, I'd be inclined to use a 5w30 for better fuel economy)
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#4709564 - 03/28/18 12:36 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Virtus_Probi]
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Registered: 05/27/02
Posts: 20274
Loc: Oakville, Ontario
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The only downside I see to the 5W30 ESP (assuming extreme cold performance is not critical) is that it has a low starting TBN due to being a very low SAPS oil, so it is not at all suited for longer OCIs except on very low sulfur fuel. Patman, do you know what the sulfur levels are for the gas you get in Canada?
Here is a link with some info as to the sulfur levels in our gasoline: https://www.canada.ca/en/environment-cli...r-gasoline.htmlI'm not concerned about the TBN since I won't be doing long OCIs, probably the highest the OLM would ever let me go would be 7-8k.
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#4709567 - 03/28/18 12:38 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: slacktide_bitog]
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Registered: 05/27/02
Posts: 20274
Loc: Oakville, Ontario
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Is this move to 0w40/dexos2 for all Corvettes from 2019-on, or just the special variants like the Z06 and ZR1?
All versions of the Corvette are now factory filled with this oil.
There are a few dexos 2 5w30 oils available, such as PP Euro L at Walmart for about $25/jug
I have also considered the PP Euro L 5w30 too, I read on here that it might have an HTHS as high as 3.68.
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#4709601 - 03/28/18 01:01 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 12/24/11
Posts: 3675
Loc: North Carolina
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Sounds like picking nits to me.
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"Zed's dead baby, Zed's dead."
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#4709606 - 03/28/18 01:06 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 06/25/15
Posts: 3811
Loc: New England
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I don't want to poke into the Russian Oil Club's VOA of M1 5W30 ESP right now (and it's by far the best VOA I've seen for that oil), but it looks like the 0W40 mentioned above would have a higher ZDDP level than the 5W30. Might be of some importance given that this 0W40 seems to be crafted for this particular Corvette/high output GM application, maybe it's a don't care...
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2014 Forester XT, 80500 miles Last Change; Valvoline Full Synthetic 5W30 d1G2 Tokyo Roki 15208AA170 filter
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#4709649 - 03/28/18 01:44 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 12/06/17
Posts: 121
Loc: Finland
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Intresting... acea c3 oil in a corvette. Like to see a uoa with this oil in a corvette. FS version over this oil anytime.
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#4709662 - 03/28/18 01:55 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: rooflessVW]
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Registered: 06/25/15
Posts: 3811
Loc: New England
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Sounds like picking nits to me. Where would BITOG be without endless overanalysis of oils? ;^) BHAEF = Bob Has An Empty Forum
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2014 Forester XT, 80500 miles Last Change; Valvoline Full Synthetic 5W30 d1G2 Tokyo Roki 15208AA170 filter
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#4709671 - 03/28/18 02:02 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Patman]
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Registered: 02/18/11
Posts: 6517
Loc: Hudson, NH
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So, what does it all mean. Is this 0w40 thinner?
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06 Escalade 6.0L AWD 155k. M1 EP 5w30 Fram TG 03 Maxima 3.5L Unknown miles ST 10w30
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#4709675 - 03/28/18 02:04 PM
Re: Mobil 1 5w30 ESP vs 0w40 ESP
[Re: Bjornviken]
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Registered: 05/27/02
Posts: 20274
Loc: Oakville, Ontario
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They used the UK formula as a starting point and reformulated it to come up with the version sold here in North America.
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