E20 Rubber Degradation Claim: Real Risk for Older Vehicles, Overstated for Modern Fleets

Evidence supports ethanol-related material concerns in pre-2000s vehicles, but automaker approvals, Brazil's decades-long experience, and ethanol-tolerant materials weaken this as a sweeping finding.

bt-corporate · 7/7/2026, 5:33:11 AM · Ask about this →