Mobil 1 5w50 SuperCar API SP (DexosR)

[k1xv]

As a 2022 Z51 Corvette owner, I have no interest in the Z06. The flat plane crank results in inherent vibration issues that can't be good for long life and reliability. Some of these cars will be subject to great abuse on the street, others will be driven by old guys who putter around at 3 percent of the car's capability, and a few will be primarily track cars. And I agree, the oil's high zinc levels show that GM never thought these cars would get to 200,000 miles.

 

[pzev]

...If one is concerned with wear (not DLC coated cam in my case), is there any reason I should not run the 5W50 Supercar instead of the FSX2 5W50 in my GT3 RS?

In my discussions with folks in the know the Dexos R 5W50 was based on Mobil 1 FSX2 5W50, with more ZDDP added for wear protection, and more Boron added for turbo charged applications

Is there anyway Dexos R isn't better than FSX2, besides early cat issue, which in reality don't happen in supercars since they aren't daily?

Likely my next oil.

DexosR is most likely not based on FSx2, the viscosity (higher for DexosR), pour point (lower for DexosR), and density is slightly different. I'm not going to say which oil has the better base oil, but will point out DexosR is about 30% more expensive per quart.

I just completed a full track weekend at Circuit of the America's in my mustang with DexosR in the sump. No noticeable oil consumption over about 4hrs on track and oil pressures before and after appear to be about the same. However I should note, day 2 was a much slower pace than day 1 due to rain, and the engine wasn't working as hard. It was about 2hrs of track time each day, over 5 25 minute sessions.

I was planning on sending off a UOA right away, but will probably leave the oil in the sump for one more track day (since the rain kept me from really hammering on the car). I will report back with my UOA, so we can all see if it sheers.

 

[edyvw]

As a 2022 Z51 Corvette owner, I have no interest in the Z06. The flat plane crank results in inherent vibration issues that can't be good for long life and reliability. Some of these cars will be subject to great abuse on the street, others will be driven by old guys who putter around at 3 percent of the car's capability, and a few will be primarily track cars. And I agree, the oil's high zinc levels show that GM never thought these cars would get to 200,000 miles.

All European high-SAPS oils run 1000ppm to 1200ppm Zinc.
Last two UOA from my BMW:

Zinc is at or higher than 1100. I highly doubt it will be an issue.

 

[Indyxc]

It looks like the better oil to me. Any reason I would not want to run this in my 16' Porsche GT3 RS? Do we know the HTHS of this oil? The Mobil 1 Euro 5w50 FS X2 is like 4.4, which I like.

 

[addyguy]

50-weight starts at 16.8 cst, IIRC…this is at best a 5W-40; not a 5W-50.

 

[pzev]

50-weight starts at 16.8 cst, IIRC…this is at best a 5W-40; not a 5W-50.

Blackstone is off, I'd trust the mobil spec for this oil, which is 18.1cst. Every VOA I've ever sent into blackstone has read low on viscosity.

 

[GM4LIFE]

Amsoil signature series also comes in 5W-50 and I’m sure it’s better than Mobil 1 Supercar.

 

[travis8352]

Amsoil signature series also comes in 5W-50 and I’m sure it’s better than Mobil 1 Supercar.

I mean considering exxonmobil developed this oil with GM for IIRC 23 months in the lt6 engine i am doubting that. Not saying amsoil is bad ofcourse as its not it is an outstanding oil

 

[Big_B]

Inte

From what i read in some mobil patents, its to maximize the performance of the anti wear package. The lower they went with detergents, the thicker antiwear tribofilm was formed on metal parts. But they acknowledged that to low and they had cleanliness issues.

Wonder how HPL gets by with such HIGH detergency yet low wear metals.
Probably never know that answer.

 

[travis8352]

Inte

Wonder how HPL gets by with such HIGH detergency yet low wear metals.
Probably never know that answer.

More than one way to do it is all. I mean the patent also states that mobil determined the best combination for thickest tribofilm without increasing zddp was to use 400 ppm boron and 20% AN. The amount of AN they use is unknown but we do know they definately dont use 400 ppm boron

 

[pzev]

I will have a UOA on this oil, in fact the same oil this sample came from, in about a month. I have an upcoming track day next weekend, and that will make a total of 3 track days (all day events), plus some street miles and some autocrosses. Should give a decent indication of how it holds up for track duty.

 

[Indyxc]

I will have a UOA on this oil, in fact the same oil this sample came from, in about a month. I have an upcoming track day next weekend, and that will make a total of 3 track days (all day events), plus some street miles and some autocrosses. Should give a decent indication of how it holds up for track duty.

Interested in the UOA!

 

[pzev]

Interested in the UOA!

I'm still waiting on the Blackstone results.

 

[Indyxc]

Very interesting. The detergents and anti wear seem at like 75% of what you would expect compared to your Blackstone VOA.

Interested to see the Blackestone UOA.

 

[pzev]

Very interesting. The detergents and anti wear seem at like 75% of what you would expect compared to your Blackstone VOA.

Interested to see the Blackestone UOA.

Here are the Blackstone results of the same sample listed above.

 

[buster]

It's now a 40 grade which is no surprise. One thing I've noticed with some of the Mobil 1 grades that have more VII is they drop viscosity rather quickly. It was posted before though that Mobil uses a very clean VII though that won't leave as many deposits. I don't know how true that is or not though.

 

[Mtnbiker]

Any more information, or reports from folks?
Daily and road track?
I have a FORD 2022 10r80 10 speed Coyote Mustang MACH 1 with the handling package (has an oil cooler) that I do HPDE road courses VIR and Summit PT.
I drove about 12 hours as daily driver and then did three days at VIR with Shell Rotella T6 5W 40. partially because that’s what I could find at the time. The real life monitor says I’ve got 34% of my oil life left. I’m not sure but I think it may be based on blended/not full synthetic oil so I’m assuming any kind of full synthetic should get much better or longer life. More so than what the oil life monitor says.
It Has heat exchanger/coolers for all fluids.
I’m trying to decide now if I should go ahead and put in the 5W-50 SUPERCAR. For another day of HPDE at Summit point and then be able to leave it in for another 4k to 5k miles on it.
I live in Northern Virginia, so there’s no extreme temperatures.
I am on the Michelin pilot sport 4S ultra high performance tires and I plan to not run or drive the car and temperatures close to freezing.
I am new to the tracking/HPDE. I do enjoy it though.
I am wondering if I should change the other fluids post a certain amount of road course days/tracking.
I am interested in any kind of wisdom you folks may have.
Thank you.

 

[userfriendly]

Any more information, or reports from folks?
Daily and road track?
I have a FORD 2022 10r80 10 speed Coyote Mustang MACH 1 with the handling package (has an oil cooler) that I do HPDE road courses VIR and Summit PT.
I drove about 12 hours as daily driver and then did three days at VIR with Shell Rotella T6 5W 40. partially because that’s what I could find at the time. The real life monitor says I’ve got 34% of my oil life left. I’m not sure but I think it may be based on blended/not full synthetic oil so I’m assuming any kind of full synthetic should get much better or longer life. More so than what the oil life monitor says.
It Has heat exchanger/coolers for all fluids.
I’m trying to decide now if I should go ahead and put in the 5W-50 SUPERCAR. For another day of HPDE at Summit point and then be able to leave it in for another 4k to 5k miles on it.
I live in Northern Virginia, so there’s no extreme temperatures.
I am on the Michelin pilot sport 4S ultra high performance tires and I plan to not run or drive the car and temperatures close to freezing.
I am new to the tracking/HPDE. I do enjoy it though.
I am wondering if I should change the other fluids post a certain amount of road course days/tracking.
I am interested in any kind of wisdom you folks may have.
Thank you.

How is your oil pressure with the 5w40 T6?
The flat plane Corvette went with an SAE 50 to maintain high oil pressure in all operating conditions.
Why a 5w50 with all those dreaded VIIs?
Those VIIs temporarily shear in the bearing spaces reducing heat generating and power robbing fluid friction.
I’m sure 5w50 supercar will work fine in your Mustang, but do you need it, or just have a hankering to try it?
In addition, it’s best not to bounce around with different oil additive chemistry with every other oil change.

 

[Mtnbiker]

How is your oil pressure with the 5w40 T6?
The flat plane Corvette went with an SAE 50 to maintain high oil pressure in all operating conditions.
Why a 5w50 with all those dreaded VIIs?
Those VIIs temporarily shear in the bearing spaces reducing heat generating and power robbing fluid friction.
I’m sure 5w50 supercar will work fine in your Mustang, but do you need it, or just have a hankering to try it?
In addition, it’s best not to bounce around with different oil additive chemistry with every other oil change.

To be honest I was too busy learning the: hills, crest, turns, downhills and uphills, where and how to brake, where and how to add gas, remembering to look at the flaggers, making sure I wasn’t coming up too fast and too close to somebody else, that I wasn’t holding people up when they would come up behind me, Waiting for people to wave me by for the pass, trying to listen to my instructors, which direction to point people by on (they are sticklers for pointing to the correct side. Even if I am all the way to one side of the track, they want you to move all the way to the other side of the track and then point the driver behind you by), etc. All at speed!
I never looked at the multiple gauges and my instructors wanted all the screens, police detectors, everything off in the car/no distractions!

I think it all was part of resulting in my improvement rapidly, so much so they thought I had a sim machine or whatever you call it and practiced the VIR/Virginia international raceway track on it. I do not have a simulator.

Do I need the SUPERCAR 5w-50 oil I do not know, but I’m trying to learn and understand. My impression is that if it’s good enough for the Corvette, it should be good enough for my Mach 1. My impression is that the Mobil SUPERCAR specifically the 5W 50 is their latest and greatest Chemistry, etc..
I’m not sure if it is a fact, but I’ve read that Ford spec blended oil in my car. My understanding of full synthetic is it has to be far better than any mostly conventional oil.
I would rather not drain out 10 quarts of oil throw it away and then two days later throw that away and put in another 10 quarts! i’m assuming I wouldn’t have to change/throw away the K&N OR Mobil 1 filter three times. I also figure the oil filters I’m using are better than the OEM.
I’m hoping the Mobil SUPERCAR 5W 50 is a good enough quality oil that I could do 4x20 min. Sessions or 80 minutes of track time, at Summit Point which is a smaller slower track than VIR. Then put 3k to 5000 daily driver miles on the same oil.

 

[chris719]

I'm kind of tempted to run this in my BMW S54 engine in the winter, but probably not since the HTHS is presumably a bit low vs the recommended 10W-60s.