[Jacques Reed]

Thanks Jordan, Rob, and Lynn,

That makes it all very clear. I have never seen a bypass valve on the oil filter lines a CMP truck here in Australia even though it is shown in the Truck Maintenance Manual. Just a carrier requirement perhaps with a semi full-flow system? My mistake calling it a relieve valve.

The Parts List for an F-15A makes no reference to that bypass valve either. It only shows the bypass filter setup and oil filter lines from the block and to the sump.

Very good information which could prevent a lot of damage and heartbreak.

Cheers,