Best Oil 5w30 or 10w40 W/ Lucas - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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Old 04-14-2012, 12:02 PM Thread Starter
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Best Oil 5w30 or 10w40 W/ Lucas

Hello all. I have engaged in an argument with a friend of mine about the best choice of oil to use in our Chevy Cobalts. I have an '06 2.2l with about 74k miles. Here are the options we are arguing over:

4 quarts 10w40 with 1 quart Lucas Heavy Duty Oil Stabilizer

or

5 quarts of 5w30


So what do you guys think? Thanks.
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Old 04-14-2012, 04:03 PM
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if you change regularly, like 3-4months it really does not matter. I use mobil 1 5w-30 full synthetic(have to use synthetic in the SS/SC). Extended changes like people who go 5000 miles or more might not be a bad idea to add the stabilizer but as long as it gets changed and driven without much beaten on the motor I dont see the since in stabilizer.

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Old 04-14-2012, 05:41 PM Thread Starter
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Well, what would be the benefits of the heavier motor oil?

What would be the benefits of the lighter motor oil?

We both live in Los Angeles. It hasn't been too hot lately, but soon...
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