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Generation III Internal Engine 1997-2006 LS1 | LS6
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first oil change with GC

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Old 07-12-2005, 12:37 AM
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Default first oil change with GC
did my first oil change on my firehawk today (since i bought it, that is). i used GC 0w30. 5 quarts were yellow, one was the greenish color... the labels were all the same so i'm not sure what to think. i just dumped it all in... hopefully nothing wrong with that.
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Old 07-12-2005, 12:42 AM
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It won't hurt anything.

You might be able to find the difference here
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Old 07-12-2005, 04:44 AM
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Do you still have the bottles? I bet the yellow ones were date coded as M0502 or newer, since GC is not green in color after that date code, it's now a different formula (still very good though)
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Old 07-13-2005, 12:14 AM
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the bottle that is still half full, has an illegible date code on it... but i'm not concerned.
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