Due to diminishing sales, 10W-30/SAE 30 Synthetic Heavy Duty Diesel
Oil is
discontinued and available while supplies last.
Encourage customers using this product to upgrade to either Signature
Series Max-Duty 10W-30 Synthetic Diesel Oil or Heavy-Duty
10W-30 Synthetic Diesel Oil.
Signature Series Max-Duty Synthetic Diesel Oil and Heavy-Duty
Synthetic Diesel Oil exceed the latest API CK-4 specification and represent a
serious upgrade in protection and performance compared to oils formulated for
previous API diesel oil specifications, including API CJ-4 and CI-4+.