Am i able to blend 5w20 and 5w30 motor oil in my auto? If that is definitely an issue within your head, the one-word respond to is Certainly, you'll be able to. Now,  the dilemma is, How are you going to combine these two oils, as They are really purported to be two grades of oil. On the other hand, we are here to explain for you all…A. JDM Alli