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Rubia Optima 3500 FE 5W-30
Fully synthetic low-SAPS diesel engine oil with Fuel Economy technology based on the latest API CK 4 specification, suitable for on-road heavy-duty applications.
RUBIA WORKS 5000 FE 5W-30
Very high performance, synthetic based low-SAPS diesel-engine oil, used in off-road heavy-duty applications with Fuel Economy technology