my GUESS would be that they have had complaints by owners that tighten the "threaded tube nut" on the oil line so tight that they twist the square nut then complain.

I think to make sure it is "secured" would mean to put an open end wrench on the square nut to hold it while tightening the tube nut. Just my opinion.


1937 Chevy Pickup
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1952 Chevy Panel
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1950 Chevy Coupe
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I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
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