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    "old 10w30 oil" for 5w30

    My neighbor has 5 quarts of old oil that is sealed. Age is unknown although is in modern plastic bottles and not cans! I run 5w30 in my Acura, would 10w30 for the rest of the summer be a good idea. I am due for an oil change and currently looking for a job..
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    Engine just rebuilt after cam failure, which oil?

    No converter, I have never heard of the Brad Penn oil, but would be willing to try it so I don't have the same issues.
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    Engine just rebuilt after cam failure, which oil?

    The guy rebuilt the whole thing and put in a comp 268 (same specs as the general kinetics it replaced) and it cost $1100. This was after 6 years but not many miles as it is a summmer only car. Thanks for the responses, I will definately make sure the zinc level is high. Is there a synthetic that...
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    Engine just rebuilt after cam failure, which oil?

    1972 Impala with a 350. When the engine was done about 6 years ago my engine builder said straight 30 weight. Last fall it wiped a cam lobe, and he said it was the fact that zinc was taken out of oils and causing cam failures. He told me to use Rotella 15 40 as has zinc. My normal mechanic says...
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