Prime motor oil

Last I checked it was $21.xx for 12qts of synthetic blend API SN (or maybe even SN+?, can't remember). Full synthetic was closer to $30 for 12qts.

EDIT: API Service SN, SM, SL ILSAC GF-5. Also apparently it's $27.98 per 12qts of 5w30 synblend. But it does go on sale at $21.xx, just gotta catch it.