Oil change
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Pro
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Oil change
Question. Dicovered my engine has the 9.3 quart capacity but is not a Z51 according to thewindow sticker. From everything i have read the higher oil capacity was only with the Z51 package. Is that incorrect or do i have a hidden Z51?
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If you fill the oil at the left side valve cover, you car should not take 9.3 quarts of oil.
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RPO code on my 2014 is:
Z51 Z51 Performance Package
Z52 Dry sump oil system
Elmer
Z51 Z51 Performance Package
Z52 Dry sump oil system
Elmer
Last edited by eboggs_jkvl; Jul 22, 2021 at 08:58 AM.
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Grandsports and Z06 also have Dry sumps, only base Stingray (non-Z51s) take 7.0 quarts. As demonstrated above, it's VERY easy to distinguish between the wet and dry sumps C7s.
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Here may well be the operative issue in the OP's own words: "...discovered my engine has the 9.3 quart capacity" Who knows how he made this "discovery," who told him what, for example. In any event, DO NOT overfill! 
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I Found it when taking my vette to the Firestone for an oil change. when they charged me for extra oil. when I questioned them, they showed me where on their computer it showed the 9.3 quarts from the engine code.
Last edited by recentlydivorced; Aug 27, 2021 at 10:20 PM.
Drifting
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From: Melbourne FL
Engine code? Just look at your VIN number. If the 5th character (after 1G1Y) is a G, H, J, K, L or M, your car is a Z51. If it's A, B, C, D, E or F, they screwed you on the oil change.
Don't go to Firestone. Take it to a dealer for an oil change or do it yourself.
Don't go to Firestone. Take it to a dealer for an oil change or do it yourself.
Last edited by sjw91; Aug 28, 2021 at 10:46 AM.
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Doesn't matter who is doing the oil change for you. If you have a dry sump, have them only put in (and charge you) for only 9 qts.
In 150,000 miles of C7 dry sump ownership, this has resulted in exactly half-way when following the oil change directions. EVERY SINGLE TIME!
If for some reason, if this is not enough oil, add some. The dry sump is better off slightly underfilled than over.
In 150,000 miles of C7 dry sump ownership, this has resulted in exactly half-way when following the oil change directions. EVERY SINGLE TIME!
If for some reason, if this is not enough oil, add some. The dry sump is better off slightly underfilled than over.
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I would not trust them. If you do not have a Z51, then they overfilled your engine which is very very bad.
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If you do have a Z51 (dry sump), and they added 9.3 quarts, they very likely over-filled it.
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We have a 2017 Z51. When the dealer does an oil change, I have them add 9 qts and get me the extra qt to top off at home.
Over the next several drives, I add oil after each drive until it's just below the top hole. Always takes between 9.7 and 9.9 qts total.
Slight over-filling is not a problem on the Z51 if that happens, Owner Manual recommends overfill by .5 qt for racing.
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There is a build sticker that will tell you exactly what options were included with your car's build. C6's had them in the glove box, but C7's have the build sticker on the trunk floor by the rear fuse box. If it says Z51 on there then winner winner, chicken dinner!
Drifting
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With all due respect... if he can't open the hood and look for the oil fill cap, he's not going to pull up the trunk carpet.
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I'm not understanding the bolded part.
We have a 2017 Z51. When the dealer does an oil change, I have them add 9 qts and get me the extra qt to top off at home.
Over the next several drives, I add oil after each drive until it's just below the top hole. Always takes between 9.7 and 9.9 qts total.
Slight over-filling is not a problem on the Z51 if that happens, Owner Manual recommends overfill by .5 qt for racing.
We have a 2017 Z51. When the dealer does an oil change, I have them add 9 qts and get me the extra qt to top off at home.
Over the next several drives, I add oil after each drive until it's just below the top hole. Always takes between 9.7 and 9.9 qts total.
Slight over-filling is not a problem on the Z51 if that happens, Owner Manual recommends overfill by .5 qt for racing.
The part about the non-Z51 wet sump is tongue in cheek. Obviously if they put over 9qts in it would over flow and make a mess.