this post may answer some of your question.
so we want a easy money making machine in the form of US Oil. It goes up so MCX Crude goes up too with a 5 min lag. It may have worked like that in the past but not any more. the problems you all mentioned are very true like the attempts you make to read it.
we all trade against or for USD, ultimately. so it may be enough to gauge the strength of USD against the 3 majors namely GBP, EUR and JPY. If all the 3 instruments point to strength / weakness, then you start with that bias. If they are not in sync, then be ready to witness bloodshed because eventually they are going to be in sync.
for me more than the predictive nature of looking at US Oil, attraction is it has very less noise in comparison. this may be because of the gaps. Also MCX Crude price is not the real supply / demand because its merely following US Oil.
One may look at CAD too for the bias but they say Canada is a very small part of the OIL industry. I may be wrong too.
I am not experienced in commodity trading but thats my future. right now, i am waiting for capital but i am actively doing paper trade. So i am looking for breakouts in 5Min chart and see if the same is translating in MCX Crude. If it does not match up or if i am not comfortable, i don't trade.
my US Oil trading was more than satisfactory but MCX trades is not that profitable. May be its because I am yet to arrive a the right lot size.
my US OIl trade results are in the link of my footer.
hope i have explained properly now. cheers