C7 oil
02-14-2022, 10:05 PM
#21
Scientific Negotiator
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St. Jude Donor '07-'08-'10, '14
https://www.summitracing.com/parts/cmb-08-0100
10qts and a PF64 filter for $94... I always buy from Summit before Amazon or Walmart.
10qts and a PF64 filter for $94... I always buy from Summit before Amazon or Walmart.
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02-14-2022, 10:51 PM
#22
Team Owner
If you don't track your car and can wait another six weeks, buy two 5-qt. jugs of 5w30 M1 from Walmart and get a fat $10-15 rebate for each jug ($10 for M1 Advanced and $15 for EP). This is assuming they'll continue their rebate program again on April 1 - Sept. 31 like they have for the past several years and the rebate amounts won't change. That's $2.40/qt. for EP based on current Walmart prices.
02-14-2022, 11:23 PM
#23
Burning Brakes
I might do that. Might be helpful to see what happens at the end of the year with the oil analysis. I'm curious to see if it lasts longer than the 5W30. I have no doubt that 0W40 ESP is better. Whether it is significantly better, IDK and nobody has been able to say how much better.
UOAs on M1 5w30 and ESP 0w40
02-14-2022, 11:30 PM
#24
Team Owner
Here are some analyses results showing multiple OCIs of both the 5w30 and 0w40, with some hard driving. The 5w30 shears down to a 20 by the end of the OCI. The 0w40 is a 30 at the end of its OCI. So it does stay a grade thicker.
UOAs on M1 5w30 and ESP 0w40
UOAs on M1 5w30 and ESP 0w40
02-15-2022, 08:27 AM
#25
Burning Brakes
02-15-2022, 08:35 AM
#26
Team Owner
02-15-2022, 10:53 AM
#28
Heel & Toe
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Location: New Braunfels, Texas
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C7 oil
This was to be my first self oil change. The dealer change out the 5w-30 oil cap to 0w-40 ( did not inform me) and I was just making sure the 5w-30 was ok. Since reading the numerous posts on oil, I see from the factory, 5w-30 was what it came with.
Thanks to all for the replies and helpful data.
Thanks to all for the replies and helpful data.
02-15-2022, 10:58 AM
#29
Team Owner
02-15-2022, 11:34 AM
#30
Safety Car
unless your driving your C7 in well below freezing temperatures you don't "need" the 0W stuff. Same on the high end, unless you are tracking you don't "need" the 40 rating. Which is why the 5W-30 is fine for street driven C7s.
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sjw91 (02-15-2022)
02-15-2022, 11:41 AM
#31
Team Owner
02-15-2022, 11:48 AM
#32
Burning Brakes
02-15-2022, 02:11 PM
#33
If you don't track your car and can wait another six weeks, buy two 5-qt. jugs of 5w30 M1 from Walmart and get a fat $10-15 rebate for each jug ($10 for M1 Advanced and $15 for EP). This is assuming they'll continue their rebate program again on April 1 - Sept. 31 like they have for the past several years and the rebate amounts won't change. That's $2.40/qt. for EP based on current Walmart prices.
02-15-2022, 05:42 PM
#34
Melting Slicks
When the M1 rebates start every year you can plan on a heads-up thread opening soon thereafter, so just keep an eye out. They usually start on April 1st and go 'til Sept 31st. I'll be watching myself, as I'm down to one jug now, and I'm feeding two vehicles, my C7 and a truck with the same oil.
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sjw91 (02-15-2022)
02-16-2022, 07:21 AM
#35
Racer
Here are some analyses results showing multiple OCIs of both the 5w30 and 0w40, with some hard driving. The 5w30 shears down to a 20 by the end of the OCI. The 0w40 is a 30 at the end of its OCI. So it does stay a grade thicker.
UOAs on M1 5w30 and ESP 0w40
UOAs on M1 5w30 and ESP 0w40
This is a quote from Tadge, our Corvette's lead design engineer. It's not quantifiable data and it's certainly dependent on the individual's weather conditions and style of driving, but based on what he says, I use the 0-40. The 0-40 oil clearly offers broader protection perimeters. If you never operate your car outside those perimeters, then I doubt it helps. I think I heard on another interview somewhere (I couldn't locate it) Tadge mentioning below 40 degrees was where 0-40 began to add some added protection over the standard fill.
Tadge answered:
Yes, 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 thompstl1; 02-16-2022 at 07:31 AM.
02-16-2022, 08:34 AM
#36
Pro
OP, being in New Braunfels you can check online inventory for O'Reillys and Advance Auto Parts near you. I live in Pflugerville and found the ESP 0w40 listed in stock at a few stores around me when I was looking.
Since I have not tracked my 16 Z51 I put Dexos 5w30 in mine because it was available at Costco for a great price. If I get a chance to track it then I'll switch oil prior.
Since I have not tracked my 16 Z51 I put Dexos 5w30 in mine because it was available at Costco for a great price. If I get a chance to track it then I'll switch oil prior.
02-16-2022, 09:47 AM
#37
Team Owner
I used Mobil 1, 5w-30 synthetic in my 15 Z06, dexos 2, like you , I could not find the 0-40w that I really wanted. After doing the oil change and driving it a time or two, everything was fine, car ran good with good oil pressure. When I put the new oil in the tank, I noticed that on the lid on the oil tank said 5-30 dexos on it, so even though I would have liked to had 0-40 weight, felt okay using the 5-30 weight since I guess that's what it came with from the factory. Bought 2 ea. 5 gal jugs at Walmart for $19.95 ea. The only oil available in 0w-40 weight when I bought mine was the European formula and I had read on the Forum not to use it.
02-16-2022, 10:22 AM
#39
Team Owner
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sjw91 (02-16-2022)
02-16-2022, 06:50 PM
#40
Team Owner