Engine oil
Racer
Joined: Jan 2011
Posts: 267
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Don, I had exactly the same Q; It's right there in the C7-Z51 manual. It appears that GM considers Mobil 1 best for cars under track stress, therefore a better oil. Another oil Q; Does anyone have experience with AMSOIL? A very nice guy gave me a whole case of 5w30 synthetic.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
Instructor
Joined: Dec 2013
Posts: 186
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Don, I had exactly the same Q; It's right there in the C7-Z51 manual. It appears that GM considers Mobil 1 best for cars under track stress, therefore a better oil. Another oil Q; Does anyone have experience with AMSOIL? A very nice guy gave me a whole case of 5w30 synthetic.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Don, I had exactly the same Q; It's right there in the C7-Z51 manual. It appears that GM considers Mobil 1 best for cars under track stress, therefore a better oil. Another oil Q; Does anyone have experience with AMSOIL? A very nice guy gave me a whole case of 5w30 synthetic.
Obviously very happy with AMSOIL or wouldn't still be using it.
AMSOIL makes three tiers of street oils; Signature Series, XL, OE. Which one did you get?
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C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Le Mans Master
Joined: Jul 2005
Posts: 5,328
Likes: 405
Your close on your guess...you got the ship part correct but it is military, US Navy. And they use gas turbine engines not steam turbine. I'm still trying to find a good video to show how these "hot rods" of the sea run. I have a great one on my phone but I don't want to share it online...
Le Mans Master
Joined: Jul 2005
Posts: 5,328
Likes: 405
I know I had a tough time finding it too, this stuff is confusing isn't it?
Going to the UK Mobil 1 site shows that it is current Dexos approved. The product description sheet shows that 0w40 Euro formula (as marketed in the US) is the same product as Mobil 1 0w40 ESP in the UK:
"Mobil 1™ 0W-40 European Car Formula (North America) or Protection Formula (rest of the World) Advanced Full Synthetic Motor Oil is engineered for the latest gasoline and diesel (without Diesel Particulate Filters or DPFs) engine technology delivering excellent all-round performance. It provides exceptional cleaning power, wear protection and overall performance. Mobil 1 0W-40 keeps your engine running like new in all driving conditions."
Links:
http://www.mobil.com/USA-English/Lub...l_1_0W-40.aspx
http://www.mobil1.co.uk/which-synthe...ngine-oil.aspx
Also reviewing those sheets shows that Mobil 1 0w40 does indeed have a colder pour point, higher viscosity index and higher temperature viscosity than M1 5w30
Going to the UK Mobil 1 site shows that it is current Dexos approved. The product description sheet shows that 0w40 Euro formula (as marketed in the US) is the same product as Mobil 1 0w40 ESP in the UK:
"Mobil 1™ 0W-40 European Car Formula (North America) or Protection Formula (rest of the World) Advanced Full Synthetic Motor Oil is engineered for the latest gasoline and diesel (without Diesel Particulate Filters or DPFs) engine technology delivering excellent all-round performance. It provides exceptional cleaning power, wear protection and overall performance. Mobil 1 0W-40 keeps your engine running like new in all driving conditions."
Links:
http://www.mobil.com/USA-English/Lub...l_1_0W-40.aspx
http://www.mobil1.co.uk/which-synthe...ngine-oil.aspx
Also reviewing those sheets shows that Mobil 1 0w40 does indeed have a colder pour point, higher viscosity index and higher temperature viscosity than M1 5w30
In general, dexos 1 is for gasoline engines and dexos 2 is for diesel engines. But since Europe is mostly diesels, dexos 2 is what is available and is used for gasoline engines there also. In the USA, we're mostly gasoline engines and dexos 1 is what is available and is used in diesel engines here also. I know, crazy...
Le Mans Master
Joined: Dec 2004
Posts: 5,759
Likes: 539
From: AZ
St. Jude Donor '06-'08-'10-'11-'12-'13 '14-'15-'16-'17-'18-'19
Absolutely agree, that's why I clearly stated the equipment is for power transmission. That's why we look at TAN and internal combustion engines look at TBN...they're the exact same thing, just different.
Your close on your guess...you got the ship part correct but it is military, US Navy. And they use gas turbine engines not steam turbine. I'm still trying to find a good video to show how these "hot rods" of the sea run. I have a great one on my phone but I don't want to share it online...
Your close on your guess...you got the ship part correct but it is military, US Navy. And they use gas turbine engines not steam turbine. I'm still trying to find a good video to show how these "hot rods" of the sea run. I have a great one on my phone but I don't want to share it online...
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Pro
Joined: Sep 2013
Posts: 648
Likes: 2
From: Gulf Breeze Fl
Great read. Some smart guys here. I just dumped my Z51 oil at 995 miles. Went with Mobil1, AC Delco filter and 2 magnetic plugs for a total cost of $64. I feel like I can play harder with the car now. No facts just feelings except did trust my life to MobilJet2 oil in big jet engines with No oil related issues in 8000 flight hours.
I won't let the dealer change my oil unless it would be needed because of a component change and I will bring the Mobil1. I never have good experiences with GM dealers. One told me my brake rotors warped because the got wet when they were hot. Scary.
I won't let the dealer change my oil unless it would be needed because of a component change and I will bring the Mobil1. I never have good experiences with GM dealers. One told me my brake rotors warped because the got wet when they were hot. Scary.
Pro
Joined: Mar 2013
Posts: 742
Likes: 154
Absolutely agree, that's why I clearly stated the equipment is for power transmission. That's why we look at TAN and internal combustion engines look at TBN...they're the exact same thing, just different.
Your close on your guess...you got the ship part correct but it is military, US Navy. And they use gas turbine engines not steam turbine. I'm still trying to find a good video to show how these "hot rods" of the sea run. I have a great one on my phone but I don't want to share it online...
Your close on your guess...you got the ship part correct but it is military, US Navy. And they use gas turbine engines not steam turbine. I'm still trying to find a good video to show how these "hot rods" of the sea run. I have a great one on my phone but I don't want to share it online...
-T
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
A few years ago I saw something on the Discovery channel that was showing the sea trials of some type of high speed, medium sized ship (destoryer maybe?). The program focused extensively on the geartrain that converted the high RPM power of the gas-turbines to the high-torque, low RPM power of the prop shaft. The technicians were using pens to mark the gears and check the wear patterns from the initial runs. Based on that wear they would shim the gears as necessary to optimize the mesh. As a mechanical engineer I thought the show was excellent, but I have not been able to find it online.
-T
-T
Burning Brakes
Joined: May 2008
Posts: 1,146
Likes: 28
From: Aledo, TX
I talked to Spring Mountain Raceway today where they have a bunch of C7's and said all their cars are running 15w50 race oil and that they are overfilling their sumps by 1/2 a quart. I thought this was interesting given that the rule seemed to be to run less.
I know for sure I am installing a catch can on this car.
I know for sure I am installing a catch can on this car.
Madison Wisconsin
Joined: Nov 2013
Posts: 504
Likes: 32
From: Madison Area WI
Interesting: I just got a notice from GM on the importance of the engine breaking-in period and for following the instructions on speed and RPMs limits during break in. Seems some people thought that you could push this engine direct from the factory. Oh My! Not smart.
GM does not allow RPM above 4000 or use of the cruse control during break in. I cannot believe that people think this engine needs no break-in period. GM has said that not following their break-in (see owners manual) instructions voids the warranty.
GM does not allow RPM above 4000 or use of the cruse control during break in. I cannot believe that people think this engine needs no break-in period. GM has said that not following their break-in (see owners manual) instructions voids the warranty.
Instructor
Joined: Sep 2013
Posts: 179
Likes: 1
From: bradenton Fl.
slippery subject
TIME2RUN: I find it quite interesting that your service manager says that the C7's are being filled at BG with Mobil 1 when the manual and the dry sump fill cap specifically say other wise. Also, if you read the fine print in the manual (just kidding) it says that if you are going to track the car...go to Mobil 1. Just my observation but factual
Madison Wisconsin
Joined: Nov 2013
Posts: 504
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From: Madison Area WI
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Originally Posted by bobby777
Dexos from GM--is made by Mobil--it is in fact Mobil 1 5-30 oil=
Dexos1 is a standard, not a product. The factory and dealer fills are ACDelco Synth Blend products.
Those ACDelco products are in no way related to Mobile 1 other than both being engine lubricants.
Racer
Joined: Jan 2011
Posts: 267
Likes: 0
There is obviously a lot of high tech experience on this thread so I have an oil Q:
I will run 2-3 laps in my Z51 behind the pace car at the Barber Motor Speedway on April 23rd and 10-12 high speed (150 max) laps at Talladega on May 24th. I also have an oil change due just before BMS. (I realize Mobil 1 20w-50 is recommended for track but I don't consider either event as a prolonged high stress event). I would prefer to change oil only once and I am considering Mobil 1 5w-30 Extended Performance DEXOS approved as the choice. This is the really expensive (gold) Mobil 1 5w-30 with higher engine temp protection. Other than these two events my beauty will only be "cruisin'". Advice, suggestions please.
TX, Sam
I will run 2-3 laps in my Z51 behind the pace car at the Barber Motor Speedway on April 23rd and 10-12 high speed (150 max) laps at Talladega on May 24th. I also have an oil change due just before BMS. (I realize Mobil 1 20w-50 is recommended for track but I don't consider either event as a prolonged high stress event). I would prefer to change oil only once and I am considering Mobil 1 5w-30 Extended Performance DEXOS approved as the choice. This is the really expensive (gold) Mobil 1 5w-30 with higher engine temp protection. Other than these two events my beauty will only be "cruisin'". Advice, suggestions please.
TX, Sam
Drifting
Joined: Sep 2013
Posts: 1,259
Likes: 24
I base this on nothing but gut feel...I don't see a need to use special oil for these 2 events, especially the first. I'm assuming you have the Z51 dry sump and that it will not be seriously hot at Talladega in May. But...you know what they say about "assume"!
Now for my question! How did you come to be able to do these two runs?
Now for my question! How did you come to be able to do these two runs?
Last edited by LT1xL82; Feb 24, 2014 at 11:47 AM.
Madison Wisconsin
Joined: Nov 2013
Posts: 504
Likes: 32
From: Madison Area WI
As a petroleum chemist you may want to look again. Just saying...
What we said is correct.
Dex is a standard,...
products "like" Mobile1. See the word "like"?
ACDelco sysn is very much "like" Mobil1. Look at the chemistry spec sheet. Do you see any difference at all in their physical or chemical test results. Like means "like". If A=B then B=A.
Just saying.... What I said is correct.
Madison Wisconsin
Joined: Nov 2013
Posts: 504
Likes: 32
From: Madison Area WI