New factory oil fill - 0-40
01-31-2018, 05:39 PM
#101
Pro
After further thought I think I'm going to stick with the 15w50 for the summer. On a low 90's day I was running 265 oil and I have lots of room to go faster so I'm not sure where the temp will finally settle out at. I think the 0w40 will be fine for the fall and spring track days and be ideal for street driving in winter. It'll be interesting to see what others experiences will be.
01-31-2018, 08:13 PM
#102
Burning Brakes
I already have the M1 15W50 in the garage for this summer. OW40 should be available for my next oil change in September.
I like the idea of the zero weight for better oil flow at start up and will record oil temps on track this summer along with oil analysis for a real world comparison. I think the 0W40 should be just fine. Long overdue IMO
I like the idea of the zero weight for better oil flow at start up and will record oil temps on track this summer along with oil analysis for a real world comparison. I think the 0W40 should be just fine. Long overdue IMO
01-31-2018, 11:12 PM
#103
If my '18 built just before the '19 switchover doesn't come with 0w40, I'm definitely switching at the 500 mile change.
02-01-2018, 06:09 PM
#104
Moderator
Member BEZ06 posted this info from a Mobil 1 presentation at the Rolex Corvette Hospitality Tent:
At the Rolex in the Corvette Corral Hospitality Tent right now listening to a Mobil1 presentation.
They say the new 0W-40 is a different formulation than the European version they’ve had for a long time.
The new 0W-40 meets the Dexos certification specs. They say it will be available at dealerships Feb 1st, but not in retail auto stores for about 6 months.
It’s good for the street and track. It will become the factory fill for all Vettes.
They say the new 0W-40 is a different formulation than the European version they’ve had for a long time.
The new 0W-40 meets the Dexos certification specs. They say it will be available at dealerships Feb 1st, but not in retail auto stores for about 6 months.
It’s good for the street and track. It will become the factory fill for all Vettes.
02-02-2018, 01:39 PM
#105
Burning Brakes
I mentioned this in another "oil" thread but no comments, so I'll mention it again here. It appears that the ESP Dexos2 0W-40 Mobil 1 oil is "alive and well" in the U.K. Here's a link: https://www.mobil.com/English-GB/Pas...bil-1-ESP-0W40. The specs show a reduction in phosphorus and sulfated ash to the levels in our existing Dexos1 5W-30. And, as an aside, if you extrapolate the 40 degree and 100 degree viscosity specs down to lower temps, you'll see that the 0W-40 oil stays thicker than the 5W-30 down to temps that we'll likely never see -- the crossover point is in the neighborhood of -30 degrees C (-22 degrees F).
Ernie
Ernie
02-02-2018, 03:10 PM
#106
Race Director
According to the Mobil 1 guys that gave a presentation in Daytona last week, the 0w40 for the Corvette is based on the UK Formula, but it has been reformulated for the US market. So the final product we see in North America is probably going to have different technical data than in the link above.
02-02-2018, 03:17 PM
#107
Team Owner
I mentioned this in another "oil" thread but no comments, so I'll mention it again here. It appears that the ESP Dexos2 0W-40 Mobil 1 oil is "alive and well" in the U.K. Here's a link: https://www.mobil.com/English-GB/Pas...bil-1-ESP-0W40. The specs show a reduction in phosphorus and sulfated ash to the levels in our existing Dexos1 5W-30. And, as an aside, if you extrapolate the 40 degree and 100 degree viscosity specs down to lower temps, you'll see that the 0W-40 oil stays thicker than the 5W-30 down to temps that we'll likely never see -- the crossover point is in the neighborhood of -30 degrees C (-22 degrees F).
Ernie
Ernie
02-02-2018, 03:24 PM
#108
Safety Car
Moe Power, Please.
Here's a thought for the street and drag strip use.
5-30w is what is recommended/warranty as of now for street use in the Z06. I don't know where the crossover point is in oil temp that the 40 weight oil is thicker than the 30 but one thing that I have read over & over in articles is that in general a thinner oil makes more power.
In an article that I saw on the net not that long ago I believe it was a 5/20w or a 0/20w full synthetic oil (not Mobil) that protected from wear, i.e. metal getting together the best out of all the various 'weights' and brands tested. If that 'weight' was approved for the Z06 I would be using it. You will also notice that the thinner oils on the market usually mention improved gas mileage (efficiency) on their labels.
5-30w is what is recommended/warranty as of now for street use in the Z06. I don't know where the crossover point is in oil temp that the 40 weight oil is thicker than the 30 but one thing that I have read over & over in articles is that in general a thinner oil makes more power.
In an article that I saw on the net not that long ago I believe it was a 5/20w or a 0/20w full synthetic oil (not Mobil) that protected from wear, i.e. metal getting together the best out of all the various 'weights' and brands tested. If that 'weight' was approved for the Z06 I would be using it. You will also notice that the thinner oils on the market usually mention improved gas mileage (efficiency) on their labels.
02-02-2018, 03:54 PM
#109
GM has said the new 0w40 is now the recommended oil for all C7s. Here is the text of an "Ask Tadge" answer on the subject:
. . . the new Mobil1 OW40 Dexos 2 oil (Mobil 1 ESP Formula 0W-40) is also the recommended oil for all C7's prior to 2019. This oil was specifically developed to meet all of GM's performance requirements during engine dyno testing, vehicle road testing and performance track testing including the 2014-2018 Corvettes (all models). The Multi-grade Mobil 1 ESP Formula 0W-40 synthetic motor oil has many benefits including exceptional fast oil flow at startup along with low temperature pump-ability and exceptional viscosity/performance characteristics at high-temperature and high-RPM operating conditions. We are still refining our recommendations for the LT5 in the upcoming ZR1, so they may differ.
. . . the new Mobil1 OW40 Dexos 2 oil (Mobil 1 ESP Formula 0W-40) is also the recommended oil for all C7's prior to 2019. This oil was specifically developed to meet all of GM's performance requirements during engine dyno testing, vehicle road testing and performance track testing including the 2014-2018 Corvettes (all models). The Multi-grade Mobil 1 ESP Formula 0W-40 synthetic motor oil has many benefits including exceptional fast oil flow at startup along with low temperature pump-ability and exceptional viscosity/performance characteristics at high-temperature and high-RPM operating conditions. We are still refining our recommendations for the LT5 in the upcoming ZR1, so they may differ.
Last edited by Foosh; 02-02-2018 at 04:40 PM.
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Gonzo (02-14-2018)
02-02-2018, 04:18 PM
#110
Burning Brakes
According to the Mobil 1 guys that gave a presentation in Daytona last week, the 0w40 for the Corvette is based on the UK Formula, but it has been reformulated for the US market. So the final product we see in North America is probably going to have different technical data than in the link above.
I guess the obvious things are the lower sulfated ash, phosphorus, and zinc for the new oil; but based on Patman's comment above, there are probably other things in the works as well.
02-02-2018, 07:40 PM
#111
The link below contains more "Ask Tadge" info on the reasons underlying the oil recommendations change. The bottom line seems to be that there is a better oil now that meets GM's specs, and you no longer have to change the oil for HPDE. See post #30 in the link below:
https://www.corvetteforum.com/forums...post1591842828
https://www.corvetteforum.com/forums...post1591842828
Last edited by Foosh; 02-02-2018 at 07:52 PM.
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Gonzo (02-14-2018)
02-02-2018, 09:29 PM
#112
Race Director
Another problem with the European 0w40 Mobil 1 that has been for sale in the US already is that it has very high levels of calcium (over 3000ppm), so that's something of a problem as that too can result in high ash content. I would expect the new 0w40 will have less than 1000ppm of calcium in it.
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Gonzo (02-14-2018)
02-14-2018, 02:21 PM
#113
Le Mans Master
So I'm going to Mobile 1 0w-40w at that point. Will the dealor be on the same page as GM?
I'm pretty sure I get the 500 mile oil change plus two additional changes for free. Am I correct on that? (Lt4)
Also do you folks go by the oil life indicator in the car to determine you oil change interval, or do you do it every 3,000 miles or 5,000 miles?
I'm pretty sure I get the 500 mile oil change plus two additional changes for free. Am I correct on that? (Lt4)
Also do you folks go by the oil life indicator in the car to determine you oil change interval, or do you do it every 3,000 miles or 5,000 miles?
02-14-2018, 02:34 PM
#114
Bill,
Yes, that's correct on all counts, but the jury is out on how soon 0W-40 will be at dealers. It has to be soon because 19s are arriving now, and a lot of them (all dry sumps) will need 500-mile oil changes soon, as the weather warms up, and as they get driven more often.
I have no doubts some dealers will try to tell some customers, "oh that only for 19's, and you can only get 5W-30 on your free oil change." It will be interesting to see how that plays out.
I also plan to switch at my 500-mile change, and I'm halfway there in less than a week.
Yes, that's correct on all counts, but the jury is out on how soon 0W-40 will be at dealers. It has to be soon because 19s are arriving now, and a lot of them (all dry sumps) will need 500-mile oil changes soon, as the weather warms up, and as they get driven more often.
I have no doubts some dealers will try to tell some customers, "oh that only for 19's, and you can only get 5W-30 on your free oil change." It will be interesting to see how that plays out.
I also plan to switch at my 500-mile change, and I'm halfway there in less than a week.
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Gonzo (02-14-2018)
02-14-2018, 04:07 PM
#115
Le Mans Master
Bill,
Yes, that's correct on all counts, but the jury is out on how soon 0W-40 will be at dealers. It has to be soon because 19s are arriving now, and a lot of them (all dry sumps) will need 500-mile oil changes soon, as the weather warms up, and as they get driven more often.
I have no doubts some dealers will try to tell some customers, "oh that only for 19's, and you can only get 5W-30 on your free oil change." It will be interesting to see how that plays out.
I also plan to switch at my 500-mile change, and I'm halfway there in less than a week.
Yes, that's correct on all counts, but the jury is out on how soon 0W-40 will be at dealers. It has to be soon because 19s are arriving now, and a lot of them (all dry sumps) will need 500-mile oil changes soon, as the weather warms up, and as they get driven more often.
I have no doubts some dealers will try to tell some customers, "oh that only for 19's, and you can only get 5W-30 on your free oil change." It will be interesting to see how that plays out.
I also plan to switch at my 500-mile change, and I'm halfway there in less than a week.
02-14-2018, 04:12 PM
#116
Local dealer still doesn't have any.
