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<font size="2" face="Verdana, Helvetica, sans-serif">Good point.There is simply no amount of boundary layer additization that can make up for oil thickness/viscosity to provide the cushioning that we need for our diesels.
<font size="2" face="Verdana, Helvetica, sans-serif">True.. It presented the ideas on which oils matched up with which engines in a different format even though it basically said the same thing as what SP posted.. It was just easier to read for people who just want to know which grade of oil, rather than looking at strings of numbers which are indeed important(don't get me wrong), but are not critical for joeaverage deciding on which oil to use. I made the wild assumption that anyone getting this far into this board(thread) has probably figured out which oil to use.Originally posted by mickey:
godlike242: The "chart" you posted is a dumbed down version of the information SkyPup posted. You'll notice that Xw-30 oils are not included in your 505.00 list. That's because very few such oils in North America meet 505.00 viscosity requirements. Plenty do in Europe, however.
The viscosity requirements in 505.00 are based on "centistokes" at a certain temperature, not on arbitrary "viscosity indexes" that consumers read on the side of a bottle.
-mickey