Shell ROTELLA T6 15W-40 Full Synthetic Diesel Engine Oil, Protects Against Wear, 5 Gallon, 550062921
In stock
$174.99
Listed as compatible with this vehicle by the retailer feed.
Check price2018 GMC Sierra 2500HD Motor Oil
28 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
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ARGOS 5W-40 Full Synthetic Heavy Duty Diesel Engine Oil: Improves Fuel Economy, 6 Gallon, AR945-6GLBNB
In stock
$273.99
Listed as compatible with this vehicle by the retailer feed.
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ARGOS 15W-40 Heavy Duty Diesel Engine Oil: High Soot Handling, 55 Gallon, AR645-55
In stock
$1,100.00
Listed as compatible with this vehicle by the retailer feed.
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Shell T4 Triple Protection 15W-40 Diesel Engine Oil, Enhanced Oxidation Protection, 55 Gallon, 550045148
In stock
$1,221.99
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.