After my disappointment with my first foray into GC (with the Gold) I must say I had low expectations for the Green that I was lucky enough to find last week. I just put 4.25 qts M0223 in my '99 Maxima, and I must say the Green is a totally different oil. I swear this car has never run so quiet and smooth. On the Gold it actually made MORE timing chain noise (the infamous tensioner clacking on the VQ30). with the Green it is silent and smooth. No word yet on the fuel economy, but so far I like what this stuff is doing. hopefully it will stay this way.