Also, what good is the sound going to do when you suffer alot of heat soak especially where I live. I use have a kkm element and my car suffered alot of heat soak in the summer months. However I do agree it does have good sound to it. And it had increase in performance when the weather is cool. Also, when changing oil I've always used 10w30 conventional oil because of the hot and humid weather down here. Even in the winter I still use the same grade ever since I bought my car brand new in 1996. Right now I have 127200 miles on my car still running strong. Hopefully I won't have any engine problems in the future since I change my oil and filter every 3000 miles.
