I put some Shell Rotella 15/40 in my truck last December.Oil pressure was erattic when I started the engine the next day.Saw a chart that showed 15/40 was thicker than 30W at zero degrees.Changed to 10/30 oil last week, pressure came up fast and was steady.The pump has to pull oil thru a screen on start up.No more 15/40 in my truck, cant afford to replace it or drive it much now.Might be interesting to put samples of both oils in the freezer for a while to see how thick they get.I had a jar of 40 oil that I used to stick paper gaskets in place.Cold garage,I stuck a screwdriver into the oil and it stood upright by itself.
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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