slant 6 oil weight

Knowing the Chrysler recommended 30 only for summer use in many of our engines, lets say the target viscosity range extends up to 17 or 18 cSt. In that case we can see the 10w-30 is more likely to be in the target range, even in the winter. It will also get to that viscosity sooner, which is good for short trip and short drive situations.
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