[Meter]

You have a secondary alkyl iodide, not a tertiary.  The reading I have done indicates that if one uses a polar, aprotic solvent, one might tilt things toward the S_N2.  Can you give an example of such a solvent?

Yes, I'm aware that it's not tertiary. It was just a point where SN2/E2 are clear differentiated.

Acetone is one such solvent right? If I understand correctly, aprotic means that it has no O-H bonds (like water and all alcohols). Simple ketones generally don't have such bonds since the oxygen bonds to carbon only.

[Babcock_Hall]

Yes, you are correct about acetone.  DMF and DMSO are two other polar, aprotic solvents.