Radiator Help!

[Mustang Nate]

Hey guys im buying a 1966 mustang coupe that has been sitting since 2005 and i popped off the rad cap and u could see build up particles in there what is the best way to flush it out? Last time i took to a rad shop and the boiled it but don't want to take it if i don't have to.

[TheDude]

Those particles could be coming from the engine, so a proper coolant system flush should involve the engine as well. It would also be a good idea to add a coolant filter so you can monitor what is going on.

[GT350R Klone]

I would pull the radiator out, turn the hose on full blast and shake and turn the radiator until stuff stops coming out. You will get an idea if it needs professional help.

[09Frank65]

You will also want to flush the block and heads. What do the particles look like? Someone could have thrown Barz-leak or something similar in there to hide a problem.

[Mustang Nate]

the particles looks like calcium build up from sitting maybe the white things.

[Klutch]

It's very difficult to clean a radiator at home. You don't have access to a hot tank and that's the best method for getting those calcium deposits cleaned out. Also, the radiator may need a rod out. That's where the shop removes the top of the radiator and forces a rod through the cooling passages to remove especially stubborn buildup.

Thus, I would recommend you do take the radiator to a shop. Anything else is just wishful thinking.

[ZachyNooNoo68]

Honestly I would just throw down and order a new one from summit. the steel ones are 165 bucks and will save you a headache

[Mustang Nate]

Alright thanks for the advice!

[ZachyNooNoo68]

I've had mine in for about a month and it work awesome.