I am currently using Mobil 1 Synthetic 10W-30 on my 95 Camry 2.2L. I live in Miami where we reach freezing temperatures of 40F during the dead of winter. My friend said that I'd be better using a 5W-30 b/c that's what comes standard in all sports cars. Anyone have any input? Also, I use the K&N Gold filter but want to use a larger (longer) filter, what is the longer version of the HP-1003?