Kirkland Signature Heavy Duty Diesel 15W40 Synblend, 1 gal, 3-count

Kirkland Signature Heavy Duty Diesel 15W-40 Synblend Motor Oil, 1 gal, 3-Count — Heavy-duty 15W-40 synthetic blend motor oil formulated for diesel engines; helps protect against engine wear, deposits, and oil breakdown under severe operating conditions; supports extended engine life and consistent performance; suitable for commercial trucks, fleets, and heavy equipment; three-gallon pack ideal for routine maintenance and bulk use.