Post by
BlackCat81 »
https://forums.nicoclub.com/blackcat81-u256498.html
Sat Nov 28, 2015 8:59 am
Get a spill proof funnel. It makes it much easier. Let the car get hot, and rev it to about 3k and hold it for a minute or two. Let it idle for a bit and repeat. You may have to do it several times, it can be a bear to get the air out of the heater core. You should have heat at about 150F at idle, so if you're in that range, you're good.