This +82% move from Jan baseline ($60→$109) is most similar to 1990 Gulf War in magnitude (+90%), not 1973 or 1979. The 1990 shock lasted ~6 months and produced an 8-month recession + 6.3% peak inflation.

But there are two structural differences that make 2026 potentially worse: 1. Starting position: in 1990 inflation was already 5%+ and the Fed had room to ease. Today the Fed has been trying to normalize for 3 years. 2. Fertilizer: the Gulf isn't just oil. It's where ~25% of seaborne ammonia/urea moves. Gas feedstock shock → fertilizer cost explosion → food inflation on 3-6 month lag. The 1990 shock didn't have this because Hormuz closed briefly and the fertilizer supply chain wasn't as Gulf-dependent.

At $109 sustained for a quarter, models using published RBC/Oxford/IMF parameters project: US CPI to 7.6%, global GDP to 1.8%, Fed forced to hike into a near-stall economy.

The word "stagflation" keeps appearing in headlines but the mechanism usually isn't spelled out. The mechanism here is: oil → input costs → CPI → Fed hikes → credit tightens → investment falls → GDP sinks. Meanwhile oil → food → real wage squeeze. Both channels active simultaneously.