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.
China did not dispute Japanâs claim to the islands during this period. Nor did China object when the United States took control of them during the occupation of Japan starting in 1945. The U.S. handed the islands back to Japan in 1972.But since the early â70s, China has argued that Japan seized the islands in violation of international law.apan took control of the islands, via the treaty, when it forced China, which lost the war, to cede Taiwan to Japanâand in Chinaâs view, the islands are part of Taiwan. When Taiwan was returned to China after World War II, the islands should have gone back with it.