Compact, powerful, and jobsite-ready—the UNIMIX 13 from Universal HDD combines efficiency and reliability in a portable mud mixing solution. Equipped with a 13 hp air-cooled, single-cylinder OHV engine, it features Oil Alert protection, dual electric and recoil start, and runs on gasoline with a 6.4-qt fuel capacity. Despite its robust performance, the mixer maintains a compact footprint: 40.72 in (L) × 35.00 in (W) × 37.74 in (H)—making it easy to transport and integrate into your HDD setup.