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It can get well below freezing here, and I run the recommended 5w20 year round. My last two UOA's were poor, but I hear the J30A1 tends to be a high wear engine. I somewhat recently started trying to get better MPG just because I can, and my engine uses no noticeable oil now. I used to burn .5-1qt per 3K, and then would change it when the level got to the bottom dot. I have 4K on it now, and it didn't budge from the top dot, which has never happened before. Same Penzoil Platinum 5w30 + Puralator PureOne w/ FilterMag RA300 as always. I'm probably going to be doing a oil change and send a sample to Blackstone this time around.
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