To much engine oil?

90,450 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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STEVE620
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  • 70 POSTS
Changed my engine oil with 10qt drove about 100 miles when i realized that i should have only installed 8qt. i removed 2qts. could i have caused any damage. oil pressure good.
Apr 23, 2026 at 4:31 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Verify the final oil level using the dipstick procedure and capacity information for the actual vehicle and engine. The amount removed alone does not document the final level. If there are warning lights, unusual noise, smoke or other new symptoms, have the vehicle assessed. The discussion does not establish that damage occurred, but it also cannot certify that the engine was unaffected.

Guidance references and applicability

2CarPros: Original discussion 1712623 https://2carpros.com/questions/to-much-oil-788673 Source for the owner's reported history and outcome. Contributor suggestions are not independently confirmed diagnoses. No attachment content was verified. GM: 2017 Chevrolet Silverado owner manual https://contentdelivery.ext.gm.com/content/dam/cope/en_us/public/pdf_assets/active/owners_manuals_browse/17_CHEV_Silverado_OM_en_US_23476161B_2016OCT04_LO_2P.pdf General manufacturer support for maintaining oil within the dipstick operating range. Use the manual matching the actual vehicle to establish its checking procedure and capacity; this citation does not prove damage or absence of damage.

Read the replies · Discussion summary and reported outcome

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STEVE W.
  • ✓Experienced Mechanic
  • 15,385 POSTS
While it isn't a good idea it likely didn't hurt it. The oil level in most engines is lower than it could be to keep it away from the spinning crankshaft. If the crank starts frothing the oil you end up with air trapped in it and air isn't good for bearings. As such most engines are designed so the oil can only get near the crankshaft under extreme conditions when the engine it tilted or under a lot of cornering force. The rest of the time there is about 1-2 quarts of "room" in there. In this case the oil might have hit the crank a few times but it caused no real issues.
Apr 23, 2026 at 8:25 AM
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STEVE620
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  • 70 POSTS
thank you
Apr 23, 2026 at 10:01 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,604 POSTS
STEVE W. is one of our best! Please use 2CarPros anytime we are here to help.
Apr 25, 2026 at 12:55 AM

Discussion summary

To much engine oil?

The owner reported adding ten quarts of engine oil, driving about 100 miles, then removing two quarts after realizing the intended fill was eight. The owner described the oil pressure as good and asked whether damage had occurred.

Reported outcome: The owner reported removing the excess quantity. No subsequent inspection or long-term result was supplied.

The quantities and pressure description are owner reports, not independently verified measurements. The contributor's suggestion of a universal extra oil allowance is not adopted.

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