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ChrisSlicks · 08-12-2010, 08:02 AM

In a hot climate the only thing that would hurt you with 15W30 oil would be start up wear. Once up to operating temperature the 15W30 and 5W30 would be about the same viscosity and the 15W30 would be slightly more stable at higher temperatures. But best to stick close to the recommended in case there are any warranty issues.

08-12-2010, 08:02 AM	#10 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	In a hot climate the only thing that would hurt you with 15W30 oil would be start up wear. Once up to operating temperature the 15W30 and 5W30 would be about the same viscosity and the 15W30 would be slightly more stable at higher temperatures. But best to stick close to the recommended in case there are any warranty issues. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms