I would like to have some opinions on engine oil. What oils do you suggest for hot climates?

 

Mobil 0W-40 in Texas.

 

I suggest going to with 0W-40 as jhbrennan suggests. How hot are we talking ? For more information on an Oil Service Kit Click Here

 

Please study both of these links and make up your own mind. The first one addresses air cooled Porsche motors in the first half of the article and water cooled in the second half.
http://www.lnengineering.com/oil.html
http://www.lnengineering.com/joegibbsracingoils.html

I'm running the DT40. It's expensive but clearly outperforms Mobil 1. Best

 

I second this. I'm running the Motul 8100 but will by buying the JG DT40 for my next oil change.

 

Motul 8100 for street driving.

 

I'm in Ventura,CA. I'm running Mobil 1 0W-40 also.