Recent content by jimmbo

  1. J

    What about 5w-40 diesel engine oils?

    I was refering to synthetic 5w30.
  2. J

    What about 5w-40 diesel engine oils?

    I'm new here, but here's my 2 cents... Water/moisture in the crankcase is caused by the products of combustion, one of which is water. Some gets into the crankcase due to blow-by past the rings. When the oil temp gets hot enough the water will boil off. If the oil temp doesn't get hot enough the...
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