Is 0w40 a year-round oil, better than 0w30?Thanks
12-14-2001, 11:31 AM
#3
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It's got a higher high temperature viscosity...
Which means increased pumping losses and a slightly less efficient engine. Not sure if theres any demonstrable increase in protection, more isn't always better.
12-14-2001, 11:56 AM
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Yes, good in summer as it will not thin too much at high temp...
..and naturally 0w is great in winter.
So 0w40 is a 0 weight oil that will not thin more than a 40w when hot.
Here, check this out...<ul><li><a href="http://www.fernblatt.com/longhurst/engineoil_bible.html">Engine oil bible</a></li></ul>
So 0w40 is a 0 weight oil that will not thin more than a 40w when hot.
Here, check this out...<ul><li><a href="http://www.fernblatt.com/longhurst/engineoil_bible.html">Engine oil bible</a></li></ul>
12-14-2001, 12:27 PM
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I wouldn't quite take that site a gospel...
He's got a few good points but some of his technical assertions are flat out backwards, particularly the bits about synthetic oils leaking past seals and what not.
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