Posted by MeanGene1 on January 01, 2011 at 14:37:35 from (71.141.248.116):
In Reply to: 15-40 VS 5-30 posted by rick165 on January 01, 2011 at 07:19:17:
Machining procedures have improved greatly and tolerances and clearances have been tightened quite a bit, such as bearing clearances. Run heavy oil in bearings with tight clearances and you run the risk of spinning bearings. It's not unusual these days to pull a modern gasser down with over 100K and it's in very good shape, if it's been run with the right oil and changed often. The days of big tolerance ranges and long break-in periods are long gone. Mileage and longevity standards, new regs for cat converters, use of roller cams, all factor in.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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