Diesel particulate filters (DPF) require routine cleaning to remove ash that builds up over time. Most vehicles using a DPF system will have an on-board filter service monitor to indicate the filter condition and guide your filter cleaning schedule.
In ancient times the islands formed an independent kingdom. Chinese and Japanese sovereignty were successively forced on the archipelago from the 14th to the 19th century, and in 1879 the Ryukyus became an integral part of Japan. After the defeat of Japan (1945) in World War II, the United States took control of the islands.
The Battle of Okinawa started in April 1945 The capture of Okinawa was part of a three-point plan the Americans had for winning the war in the Far east. Okinawa was to prove a bloody battle even by the standards of the war in the Far East but it was to be one of the major battles of WWII. Alongside, the territorial re-conquest of land in the Far East, the Americans wished to destroy what was left of Japanâs merchant fleet and use airstrips in the region to launch bombing raids on Japanâs industrial heartland.