What oil for C7 Z06 2015
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Dexos 2 is the certification for Diesel engines. You want Dexos 1 for your C7. This site lists the current Dexos 1 approved oils.
dexos1? Gen 2 Brands | GM dexos® Licensing Program
Yes, 5W-30 for street use, 15W-50 for the track.
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483 Posts
You don't have to use Mobil 1. Any 5W30 oil which is dexos1 certified will keep your warranty alive and happy.
As for which oil is best, well, let's not open up a can of worms.
15W50 is not DEXOS certified at all (but it will not void your warranty)
I keep 15W50 in my car year round because it's a track car 90% of the time and 10% street driven.
If your location gets cold I would recommend swapping back to 5W30 during the colder months.
15W50 is only really bad for cold starts and driving around before its up to temp but once it warms up its fine.
you'll experience a little higher pressure & oil temps with 15w50 but it's not a problem.
If you don't track "often" I wouldn't worry about using 15w50 at all and stick with 5w30
Welcome aboard. Below info copied from the owner's manual:
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See
Recommended Fluids and
Lubricants
0 307.
Specification
Ask for and use engine oils that
meet the dexos1
™ specification.
Engine oils that have been
approved by GM as meeting the
dexos1 specification are marked
with the dexos1 approved logo. See
dexos®.
GM recommends Mobil 1
® engine
oils that show the dexos1 approved
logo for its dry sump equipped
engines.
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.
Viscosity Grade
Use SAE 5W-30 viscosity grade
engine oil.
Cold Temperature Operation: In an
area of extreme cold, where the
temperature falls below
−29 °C
(
−20 °F), an SAE 0W-30 oil may be
used. An oil of this viscosity grade
will provide easier cold starting for
the engine at extremely low
temperatures. When selecting an oil
of the appropriate viscosity grade, itis recommended to select an oil of
the correct specification. See
“
Specification” earlier in this section.
For track events or competitive
driving, use Mobil 1
® 15W-50 engine
oil. An instrument cluster warning
light will be illuminated at high oil
temperatures. See
Driver
Information Center (DIC)
0 113.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the
dexos1
™ specification are all that is
needed for good performance and
engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty.
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17,470 Posts
Welcome to our forum Starchild and congrats on your Z06! Norm (post #8) has provided you relevant detail re Mobil 1. Consider posting a bit about yourself at http://www.stingrayforums.com/forum/introductions-owners-corner/24082-welcome-site-tell-us-little-bit-about-yourself.html and some pictures of your beauty http://www.stingrayforums.com/forum/site-help-support/3046-how-post-pictures-your-stingray-our-forum.html#post29746 nthego:
nthego:
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5,349 Posts
I've had Mobil 1 in my car since new, because I got 4 free M1 oil changes courtesy of Chevrolet. Next change will probably be Penzoil Platinum Plus. Same price as Mobil 1 at my local auto parts store in 5 quart jugs. (Yeah, I can probably get M1 cheaper at WalMart, but I think that the Penzoil is probably better oil.) But the truth is that if you change the oil according to the OLM, and use a high quality synthetic, you'll wear out the rest of the car before the engine fails due to oil related issues.
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