WASHINGTON, June 14, 2007 – A national motor oil company is partnering with a volunteer troop-support group to keep spouses of servicemembers deployed overseas on the road. Chevron Products Company announced yesterday that its Havoline with Deposit Shield motor oil brand is partnering with Operation Homefront to launch a national program supporting troops’ wives. The program, called Operation Havoline Star, will provide 1,000 free conventional oil changes, including lube and filter, at participating Texaco Xpress Lube locations. The program is available to select military families with a financial need, and is available now through Dec. 31. “Operation Havoline Star...