10-27-2022, 01:36 AM | #15 | |
Drives: Chevy Camaro Join Date: Apr 2020
Location: Wi
Posts: 384
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10-27-2022, 08:00 AM | #16 | |
Drives: '22 Camaro ZL1 1LE A10 Join Date: Jul 2021
Location: SoCal
Posts: 322
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Judging by the mileage on here and the Facebook groups I'm in people post about, I would say you are 100% correct in your assessment. |
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10-27-2022, 08:09 AM | #17 |
Drives: 2023 CT5 Blackwing Join Date: Sep 2016
Location: Denver
Posts: 1,620
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The 1,500 miles is for the diff. And it's only applicable for the eLSD. If you don't have a SS 1LE/ZL1/ZLE, then I wouldn't worry about 1,500 miles.
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2017 HBM SS 1LE
Sold 2023 Wave Metallic CT5-V Blackwing M6 |
10-27-2022, 08:49 AM | #18 |
Drives: Soon to have 1LE Join Date: Aug 2020
Location: CA
Posts: 33
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10-27-2022, 08:49 AM | #19 |
Drives: 2002 Z28, 2023 1LT RS Redline Join Date: Sep 2022
Location: New York
Posts: 78
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Did the Cadillac CTS have an available ELSD? It had the same 1500 brake in period suggestion.
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10-27-2022, 09:45 AM | #20 | |||
Drives: 2017 1SS 1LE Join Date: Jun 2016
Location: Detroit, MI
Posts: 1,001
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Engine oil is at 500 and 1500, then follow oil life monitor or change after some specified amount of track time (I want to say 10 hours but don't remember off the top of my head), whichever occurs first. Diff fluid is 1500 miles (for xLSD types) then it depends on usage. If not tracking it, it's whatever the regular service interval is. If tracking it, it's a change again after the first track day then every 20 hrs I think, but again don't fully remember the exact number. Trans fluid for MT doesn't have an initial break-in change recommendation that I can recall, but its service interval is different between street-only driving and track driving (I think this one was 24 hrs, but I may have this one flipped with the diff track time interval). I'm not sure about AT trans fluid, but I'd guess it's somewhere in the ballpark of the MT intervals.
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2017 SS 1LE.
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10-27-2022, 02:13 PM | #21 | |
Drives: 2021 2SS 1LE Join Date: Aug 2020
Location: Cary, NC
Posts: 835
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They probably wrote the owner's manual break in procedure for the most break-in sensitive models (SS 1LE/ZL1 etc). If the lower level models don't require as much drive-line break in miles (I am not sure, given the particular hardware), GM probably didn't bother to discriminate in owners manual because they didn't want the hassle and a more conservative (longer than necessary?) break in for these models wouldn't do any harm. Proceed as you like, but I'd try to follow the specified break in procedure as it's not rediculous. Go for some long drives for fun. You'll be there before you know it. |
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10-27-2022, 02:23 PM | #22 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 2,032
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I dont recall exactly but never changed the diff fluid on my 1LE until in to the 30K mile range and it was a non-issue in the daily driver hard street use category. Ill probably change this ZL1 though just to do it before winter but I don't feel compelled to do anything else.
I made an 850 mile road trip that started with 4 miles on the clock and drove it normally the whole way, changed the oil at 1K and started banging on it. My methods haven't failed me yet. |
10-27-2022, 04:20 PM | #23 | |
Drives: 2023 Summit White Camaro ZL1 M6 Join Date: Dec 2021
Location: North Carolina
Posts: 1,801
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2023 Summit White ZL1 M6 (delivered 10/15/23)
2019 Dodge Durango R/T (daily driver) 2003 Nissan 350Z (modified) 2022 Rapid Blue 1SS 1LE M6 (delivered 2/19/22) (Sold) 2009 BMW 135i (Sold) |
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10-27-2022, 05:09 PM | #24 |
Drives: 2013 Triple Black ZL1 Vert M6 ECF Join Date: Mar 2011
Location: Trenton, Michigan
Posts: 7,047
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Back when the 5th gen ZL1's came out, they were the first cars that came with the 1500 mile break-in period, but nobody could tell us why.
One 'possibility' that we thought of was that the long break-in wasn't for the engine/drive train, or any other part of the car, it was so that the new owner would take the first 1500 miles to get used to the power and capabilities that this beast has, before they're allowed to put the hammer down and discover the full might of what they just bought. Remember, this was back before it would be common place to have new cars with almost 600 hp and designed to take to the track while keeping a factory warranty. Like i said, it was just one semi plausible reason for the long 1500 mile break-in period. |
10-27-2022, 06:04 PM | #25 |
Drives: 2023 ZL1 A10 Join Date: Nov 2021
Location: Az
Posts: 624
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C8 Corvettes limit the owner to4000rpm for 400 miles , then the dash changes and RPMs are not limited. My neighbor has one , well he moved 3 weeks ago. So I followed that for 400 miles then 5k RPMs til 800 and 5500 RPMs to 1k with my 22 SS , doing the same with ZL1, oil change 500 to 600 with Diff. I hope Happy Motoring
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2023 ZL1 A10 Shadow Gray Metallic
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