If I remember correctly, the original post was probably about a General Motors 4.3 L V-6. They tended to have piston slap at cold startup with conventional oil, and with most synthetic products. Mobil One full synthetic and a new oil filter would stop them from piston slapping. I had a GMC Jimmy S-15 4.3 V6, kept it from new in 90 until about 2000 when I sold it to my neighbor. Told him I always used Mobil One, but he tried to tight-wad it with conventional oil. Started having piston slap, conplained, tried Mobil One, stopped it. Tom
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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