Hotter means you should use a little more heavy oil, if you use 10w30, go to 10w40, when it really gets hot 100+ degrees, go up a little more, like 10w50. But this all really depends on you, the way you drive (how hard) and the distance you go, and the amount of sitting at stop lights etc... 10w40 should do you fine where you are thou, so good luck, and I hope this helps...
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Brendan: Good to know about sythetic oil in hot areas (I live in Phoenix). Is heavier or lighter oil better in a hot climate? I'm nearing an oil change (on both Tibs) and want to select the best oil for my 100F+ weather <img src=icon_smile_big.gif border=0 align=middle>
2000 Red Tiburon
1999 Blue Tiburon w/Shark Wing
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