ConocoPhillips advised it marketers today that it will raise its finished lubricant prices 3 to 5% effective May 24, 2012. The company attributes the increase to the recent increases in the price of raw materials.

Chevron announced it will increase the price of it lubricants by 3 to 6%. This increase is effective May 21, 2012. Chevron attributes this increase to the continuing rise in base oil and additive costs.

Petro-Canada advised its marketers in the US of a price increase of 3 to 6%. This increase is effective May 22, 2012. This price increase reportedly excludes Process Oils (Paraflex) and Purity FG White Oils.

Chemlube also announced a price increase; $0.30 per gallon on all bulk lubricants except fully synthetic products which are increased by $0.40 per gallon. These increases are effective May 10, 2012.