Surging prices for lubricants like greases and engine oils have stressed maintenance budgets this year, and that will likely be an ongoing concern through the second half of 2026, according to producer price data.
Fleets queried by CCJ this week said engine oil prices have jumped on the shop-floor level between 8% and just more than 10% this year. The higher end of the spread comes from fleets that have lube work done mostly by dealers, while the lower end is among larger fleets that perform wet service in-house.
The spike is driven largely by an unprecedented run-up in raw materials. Federal data from the Producer Price Index shows that lubricating oil base stocks—the primary input required to manufacture grease and motor oil—jumped 126% between January and July 2026. The surge marks a record six-month increase on both an absolute and percentage basis, noted Jason Miller, Eli Broad Endowed Professor of Supply Chain Management at Michigan State University.
The PPI for finished lubricants has spiked 16% since January 2026.Jason Miller, MSU
Meanwhile, the Producer Price Index for finished lubricants climbed 16% over the same six-month span, signaling that manufacturers have only begun passing along the steep rise in raw material costs to end users.
"Fleet maintenance managers should expect further increases in lubricant prices over the coming months," Miller said. "Rather than prices being flat this year, I'm expecting prices to rise at least another 10% by the end of the year."
A historical review of the index reveals an asymmetry in pricing patterns. Base oil costs dropped steadily from 2023 through 2025, yet Miller noted that prices for finished lubricants held firm during that period. He attributed the disparity to manufacturer margin recovery: Sharp spikes in base oil compress profit margins in the short term, prompting blenders and suppliers to hold finished product prices steady during downturns to recoup previous losses.
Because base oil supplies have faced renewed pressure through shipping disruptions affecting key producers in the Persian Gulf, Miller warned that pre-conflict price levels for finished lubricants are unlikely to return, even if raw material costs eventually ease.
On a per-mile basis, repair and maintenance costs climbed 8.6% last year, according to the American Transportation Research Institute's 2026 Analysis of the Operational Costs of Trucking.
