[cyrus]

does anyone know what that valve is for inside of a stock kawi oil filter?

 

[HDRydr2]

Valve? Eh?

 

[cyrus]

if you look inside the filter you will see a vavle @ the top...just wondering cause I noticed the aftermarkets don't have it.

 

[jerzefigga]

it might be an anti-drain back valve. Toyota OEM filters have the same thing in them

 

[SWATGeek]

Bypass valve. The valve opens when the oil is extremely thick (really really cold) or when the filter is plugged so that oil will continue to get to the engine. The theory is that dirty oil is better than no oil.

 

[cyrus]

awwww...i see