���ϳԹ���

Eaton Corp. said Wednesday its board has approved an 11% increase in its quarterly cash dividend.

Every month or so, Dustin Stricker, the maintenance manager at R.E. West Transportation in Ashland City, Tenn., sits down with representatives from South Carolina-based Michelin North America and the local Tire Centers in Nashville to do autopsies on truck tires.

Truck and auto component maker Dana Holding Corp. said Thursday its fourth-quarter profit rose from a year ago, though its revenue declined.

Engine maker Cummins Inc. said Wednesday it has revised its previously announced fourth-quarter and full-year 2012 operating results down by $20 million, with net income reduced by $12 million, or 7 cents per share.

There’s no real mystery as to why otherwise intelligent fleet operators so often negotiate full-service leases using only big, round numbers. Reason No. 1 is that they simply don’t know their actual, detailed maintenance costs.

American Axle & Manufacturing Holdings’ fourth-quarter net income rose to $319.9 million, or $4.21 per share — which included a $337.5 million tax benefit — from $31.1 million, or 41 cents, a year earlier.

Independent engine maker Cummins Inc. extended its lead as the primary supplier to the North American heavy-duty diesel truck market last year, growing its market share to 40.4%, from 39.1% in 2011, WardsAuto.com reported.

Last summer’s record heat scorched much of the United States, with evidence of the high temperatures visible on the nation’s highways in the form of chunks of broken tires and separated treads, so-called “road gators.”