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 - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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