Looking for opinions on whether or not my Civic in my sig would be a good candidate for 0w-20. No consumption/leaks. I know the 2012+ Civics with basically the same engine spec this oil. My only concern is the summer heat that is approaching soon.. mostly 80° days but some extremes of high 90s - low 100s at times. My driving is 75-80% highway and running 70 mph turning 3k rpm. Engine block has 50k miles and the head has 130k miles (block cracked and was replaced under warranty in 2009.) Been wanting to try the Napa synthetic while it's on sale.
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