I have a 03’ Honda Civic with about 140k miles on it. Have had a blown head gasket for about a year or so just haven’t had the money to fix it. So every so often I’ll have to refill the antifreeze. Yes, I’ve had it tested it’s the head gasket, with a pinhole leak. Everything else in the cooling-system has been tested functional, all signs point to the head. I’ve heard mixed reviews about these sealants, the vast majority say they it works but there are always the smaller percentage saying it doesn’t work or it’s just a temporary fix. I’d love some input on this. I need to have this car fixed…this car has been the bane of my existence. I want to make sure I have all my ducks in a row and have the directions specifically down/correct.
Here are the directions I found online:
I want to must make sure I have this correctly.
When It states that the cooling system must be clean and free flowing this is to say that I must have the thermostat and radiator cap removed? and that by clean I must do a radiator flush with a flushing agent and then water?
I’ve never removed a thermostat, I am guessing it’s not that difficult.
Similarly I’ve never flushed a cooling system before either I don’t know where the bottom radiator hose is, what might this entail?
The flushing agent I’ve chosen is: Prestone super flush.
What does it mean by flush then fill. If I am flushing with water after prestone isn’t also filling the cooling-sysem with water, or is that to say I must close up the system somehow beforehand.
Also how do I determine how much is enough water to put it so that there is enough for 32oz of blue devil?
The rest seems pretty simple to follow along it’s just 2,3 and 4 that have me a bit confused.
Excuse the vast car ignorance