W-40 ● Confirmed

Oldsmobile · Regular Production Option

Hurst/Olds 15th Anniversary package

Models 1

Documented applications

Cutlass / 4-4-2 →

• 1983–84 ● Confirmed

  Cutlass Calais K47 (continuity reference)

This page aggregates every documented appearance of W-40 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.