'57 Bel Air with a 283 question. I have, what I believe, is the original air cleaner. Can anyone tell me what kind of oil it takes--or does it matter. Also, it looks as if the carburetor is held on by only 2 bolts. It's not budging when I try to take it off. The previous owner tried rebuilding it while it was still on the car but it pours gas. Any suggestions?

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