For all asking, the drain interval of SGO fully synthetic 0w20 is minimum 6k kms. It can be streched to 8-9k kms safely. Fully synthetic oils usualy last for 10k easily but given the pollution in atmosphere, it is generally advised to limit them to 8-9k kms. Applies for 0w20 by SGO, shell, zic, kixx, caltex, total. Expensive ones like LM, valvoline etc can last for 15k minimum but they do require oil filter change before the completion of their mileage