[quote author=Rob Spec C link=topic=43138.msg494765#msg494765 date=1414849731]
Does it not affect how long it takes to get up to operating temperature though dec? For instance you use 5w30 and I use 15w50, would the 5w30 not be up to temp a lot quicker than the 15w50?
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as far as I know, 5w can be driven right away, while with 15w in colder temperatures, you should wait a bit longer. 5w will be more liquidy at lower temps, while 15w will be creamy... Thats common sense what I got from all them reads... I usually change oil twice a year, at spring I put 10w at fall, I put 5w...