Hi today im going to install me new test pipes i bought four non foulers for the o2 sensor. One question they told be to het two and screw the together but the told me that i have to get a 10mm drill and drill them through so the sensor goes in completely now here is the question do i drill both or just the upper non fouler were the sensor is going to go in by. and also someone told me that if i used anti freeze so after a time whenever i decided to take em out the sensor wouldnt be stuck with the test pipes. what antifrezze do i use or should i do it or not. thanks alot

 

not antifreeze. u need antiseize. waay to different things. antiseize is very high temp grease any auto supply store shoyld have it.

 

thanks

 

Just drill out the first one, the one closest to the O2 sensor.

 

ok