Should I use "sic" to indicate that a quotation has text in all capital letters in the original?

Should I use “sic” to indicate that a quotation has text in all capital letters in the original?

Note: This post relates to content in the eighth edition of the MLA Handbook. For up-to-date guidance, see the ninth edition of the MLA Handbook.

No. “Sic” is only used to indicate an error in the original, not unusual styling.