I have been using Amsoil 0/30 for my 02 Atima 2.5 4cyl 73K for the last 22K just got back the 12k report which was excellent execpt its visc is 15/40 same as when tested at 10K. My car uses 1 qt every 2K. at 8.95 a quart it has become to expensive. I don't have a garage and it rains alot in the winter(Santa Cruz Mountains) I need a oil that will go 10K between changes.After reading the board,I'm thinking Rotella syn and a Trasko might do the trick without breaking the bank Does this sound like a good 10K combo? Or as Pablo suggested 50/50 Amsoil/Pen LL with moly.