Well here is Houston it's lawn mowing time already and as a preseason ritual I change the oil in the lawnmower and weedwhacker (both Hondas). I've always used M1 10w/30 in both but this year I decided to try the GC gold and see what happens. I mowed 1/2 the yard to warm the old oil up and then changed to the GC. What a difference! Both the weedwhacker and lawnmower are noticeably smoother running. I am impressed! I now have 7qts green / 10qts gold and have plans to convert the whole family fleet to GC! I'll leave this post with a question: my wife's 2005 Mazda Miata calls for 5w/20 and up until now I've used M1's product. Has anyone used GC in a relatively new Miata? I don't see a problem with using it, what with all the Honda owners posting here using it (Hondas nowadays call for 5w/20). How 'bout it guys - do you think the Miata will like it? Cheers all DV