Years ago metalergy and oils where far from what they are today, another important fact is trucks in the 50's-60's were turning over 3,000 RPM at highway speeds. The trucks of today turn under 2,000 RPM, that combined with the above greatly extends the life of newer engines.
Phil
Happy 2 Wheeler!

Interesting info.
Thanks for the heads up.
BRYAN
"IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"
02' Avalanche 2500 Onyx Black
8.1L Vortec
43,000 miles
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