I'm running it right now in 3 vehicles. The two in my signature plus a 2002 Honda Civic.
The Nissan is the vehicle that I drive every day (family members drive the other two) and I've had G-OIL in it for a little over 5K miles. Frankly, I don't notice any difference versus when I ran Valvoline SynPower, Castrol EDGE, or Pennzoil Ultra (which are the others I've run in that vehicle). They all feel the same. Of course feel means nothing. What will mean something is when I do a UOA and compare the results to my previous ones.