This basic method seems to work for 3 to 5 weeks then sudden issue. Like somehow l pull air into the system over time or suddenly after several seeks. Is the fluid getting low and allowing air in. ? Do l need to keep my eye on the fluid level constantly.?
My 5.7 has a bleeder bolt right above the thermostat housing. I am TRYING TO bleed it out from that. This is 3rd attempt. It seem to be taking many times bleeding. But that sounds normal maybe