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post #1 of 4 (permalink) Old 03-26-2010, 10:13 AM Thread Starter
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Oil Change

Just took deivery on a 2010 Cobalt 1LT. Want to take out the factory oil and use MOBIL 1 Full Synthetic extended service. The factory oil is regular. I know 4 cyl's work much harder than 6's or 8's. Will using the synthetic 5W30 be a more than good oil to use?
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post #2 of 4 (permalink) Old 03-26-2010, 10:16 AM
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Welcome to the forum.

I ran the regular oil for about 5000 miles before I switched to synthetic.

I use Mobil 1 5w-30 full synthetic in my '09 LS 2.2

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post #3 of 4 (permalink) Old 03-26-2010, 11:01 AM
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used regular for the first 20k mi. Now I'm switching to full synthetic as I am working the engine a bit harder now, and want to get something that'll stay clean longer.

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post #4 of 4 (permalink) Old 03-26-2010, 12:22 PM
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Stay with the regular oil at least until the first normal oil change. Your engine needs time to properly break in. After that I would switch.

By the way.... Welcome, and congrats on the new balt.

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