C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil Drain Plug Gaskets

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Old Feb 22, 2026 | 06:03 PM
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Default Oil Drain Plug Gaskets

Is there any difference, performance-wise, between the orange and the black seals? Do you guys prefer one or the other?

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Last edited by Mitragorz; Feb 22, 2026 at 06:48 PM. Reason: Added info.
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Old Feb 22, 2026 | 06:37 PM
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The orange is probably viton vs blk rubber.
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Old Feb 22, 2026 | 08:17 PM
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Mine came from the factory with the orange kind. 37 years and maybe 30 oil changes, still using the original, and it doesn't leak!
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Old Feb 22, 2026 | 08:41 PM
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Originally Posted by NavAir
Mine came from the factory with the orange kind. 37 years and maybe 30 oil changes, still using the original, and it doesn't leak!
Just to clarify, you’re saying you’re using the original gasket??

I like the orange bc it is OEM, but the black is getting easier to find locally.
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Old Feb 22, 2026 | 08:51 PM
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Yes, never changed it. I have never taken the car to an oil change shop, and I am careful to not over torque the drain plug. If it ever starts leaking, I'll replace it.
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Old Feb 22, 2026 | 08:56 PM
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Originally Posted by NavAir
Yes, never changed it. I have never taken the car to an oil change shop, and I am careful to not over torque the drain plug. If it ever starts leaking, I'll replace it.
That’s good to know. I do oil changes on my own, but I always replaced the gasket.
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Old Feb 22, 2026 | 10:25 PM
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I made an oil plug gasket from rubber that I cut out from an old tire. Actually made around 10 of em and stuck em in a mason jar on the shelf.

Still on the first one, even after a few years of use, and it'll likely hold up from a very long time before swapping it out for another one, as it holds its form when you remove to drain.

Works great. Nice and thick and you can torque it down nicely without stripping the threads or destroying the gasket. It forms a really good seal.

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Old Mar 19, 2026 | 03:19 AM
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The orange version is the OEM drain plug gasket. Use that one. The black one is aftermarket and probably not as good quality.

For a long time, I'd go to the GM dealer and get the OEM drain plug gasket for like $1.50 or something. Then the price jumped to like $5 and so after that, I just use the aftermarket version from Autozone. Though make sure to use the kind with metal crush washer and rubber as that's the OEM type.

I also have one of those "Goldplug" magnetic drain plugs to help catch metal particles. Also this can be used to see if major damage is happening if say you are seeing chunks of metal on the drain plug magnet.
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Did away with the stock drain plug and gasket. Got a Fumoto valve. No wrenching, no changing gaskets. Easy peasy.
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Old Mar 24, 2026 | 02:27 PM
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Originally Posted by Rogue One
Did away with the stock drain plug and gasket. Got a Fumoto valve. No wrenching, no changing gaskets. Easy peasy.
Yeah, but risk of something happening or bumping it while driving potentially causing a rapid oil leak.
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