Question: what is the difference between dexos1 and dexos 2 oil?
Answer: Dexos 1 works for gasoline engine and Dexos 2 is for diesel engine and in some cases for gasoline engines as well. Earlier GM suggested Dexos 2 for mass use but recently they discovered that this oil blend does not cover LSPI. Thus recently this oil is being used only for diesel engines.