[TR] 30 psi at 65 mph

[David Brister]

If this drop in oil pressure is sudden you might consider dismantling the 
oil pressure relief valve on the top of the oil filter. Sometimes you can 
get a tiny piece of foreign matter stuck between the ball and it's seat and 
that is enough  to drop the oil pressure from 70 to 30 at fast road speed. 
I've had this a few times. When undoing the thread that holds the spring in 
be sure to count the turns or the cleared PRV will give a wrong oil 
pressure.

David Brister
1967 TR4A
CTC 77785 O