Royal Purple ROY80561 Duralec Ultra 15W40 Oil Case 3 x 1 Gallon

Royal Purple ROY80561 Duralec Ultra 15W40 Oil Case 3 x 1 Gallon is listed by Motorstate as a Motor Oil for catalog matching by brand, part number, and product name. Use this source-backed listing when comparing Royal Purple components in the Motor Oil category. The manufacturer part reference is 80561, while the Motorstate part number is ROY80561. Catalog description context: Motor Oil - Duralec Ultra - 15W40 - Synthetic - 1 gal Jug - Set of 3. No vehicle compatibility is stated here unless it is present in separate fitment data.