How does the oil bypass valve work?

[Rawze]

(10-18-2016 )Brock Wrote:  I am curious about the relief or bypass spring valve in the oil filter base. I see there is a update, bulletin 4908439. I tried to buy the update but they sold me the original.

I am curious how this bypass works? at a certain psi does it open and feed oil back into the cooler? what is the psi?

Any idea what the update fixed?

It works like this ...