Curious - re: tracking NYMEX E-mini for Crude

I was browing through Esignal's data sources window the other day and noticed that access to the NYMEX E-minis is pretty cheap (about $5 per month).

Oil seems to frequently be a factor lately in determining market direction, so my question is: Do the E-minis tend to track the full contracts for crude fairly closely? My goal wouldn't be to trade oil, but to just be able to monitor it in real-time.

I'm just curious as to how good of an indicator the minis are given that they aren't as liquid.

Thanks!
 
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