Oh, and DO NOT use Lucas or any other "additives" to cure it!

My brother-in-law used their "stabilizer" in two different Fords. One with a very high milage 351W and one with a 90K mile I6 300 in it (90K is low miles for the 300).

BOTH lost oil pressure within a few days. The I6 300 spun a bearing, the 351W just kept going because it was so loose anyway.

If you change the oil every 3000 miles, you don't need a "stabilizer"...