I use: 1. Amsoil 15w40 full synthetic diesel engine oil, will take 2 gallons every 10,000km 2. I use genuine fuel filters, buy them from Inshan (ROC) in the bamboo and change them every 10,000 km as well. 3. Genuine Air & Oil filter from (ROC) in the Bamboo. Change my air filter every 15,000-20,...