im no honda fan nor affiliated with honda, but was able to use a honda before k20 engine and i'm a believer that only use Honda Fluids on honda cars!

thats why i like more my toyota 5k and 2nz-fe engine

Same here. I once asked an SA what will happen if my engine oil is still good for 2000 kms but I do not change oil on the fourth month ... ahora mismo MAPAPANIS yung oil?
the oil will not expire, the additives will due to exposure to combustion byproducts (dirt, acids, etc) + air/moisture