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  #1  
Old 10-17-2006
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Flushing Radiator?

What is the Proper Procedure to Flush a radiator? i know i undo the drain thing and let it all out and i head someone saying take a garden hose and turn the truck on and let it run for so long...............


anyways what are the proper steps?
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  #2  
Old 10-17-2006
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I dont like to run water through my system, when i did mine last winter, i just drained it (BE CAREFUL THE PLUG SNAPS OFF) filled it with cheapo coolant....let it warm up and drained that, mine was almost brown when it came out, so it needed changed...

Then just filled it up with new expencive coolant

Rocky
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Old 10-17-2006
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you answered you own question. do you have a haines/chilton manual? it would answer alot of the questions you post.
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Old 10-17-2006
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Quote:
Originally Posted by got-dirty
you answered you own question. do you have a haines/chilton manual? it would answer alot of the questions you post.
no i dont have a manual..........what other questions have i asked?
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Old 10-17-2006
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whatever you do, do not put tap water in the radiatior
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Old 10-17-2006
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Quote:
Originally Posted by got-dirty
it would answer alot of the questions you post.
Your post count would be alot lower if you just answered his question.....

Rocky
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  #7  
Old 10-17-2006
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Quote:
Originally Posted by ranger02_4x4
whatever you do, do not put tap water in the radiatior
well nevermind that part then......i have city water.....lol
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Old 10-17-2006
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lol, so do i, but i dont put any kind of water in mine specially coming into winter, im sure it wont do much if you drain it all out, but still....i use premixed antifreeze and just throw in some cheap stuff, let it run, then drain it and fill it with the new stuff...

But like i said be careful because that drain plug breaks...i forget how mine broke but it didnt leak so i left it...oh now i remember you had to put a socket or something on it to getit off (plastic bolt) and it sheared right off when i tightend it.....

Rocky
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Old 10-17-2006
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drain half of it and then fill it with water, then run it and drain it again. you can repeat this process a couple times.
that way there is still a little bit of coolant in the system, but your truck will be fine on just water. nothing wrong with it.
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Old 10-17-2006
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Quote:
Originally Posted by rangererv
drain half of it and then fill it with water, then run it and drain it again. you can repeat this process a couple times.
that way there is still a little bit of coolant in the system, but your truck will be fine on just water. nothing wrong with it.
thanks for the info!
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Old 10-17-2006
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other than the fact tap water has minerals in it and it will ruin the radiator faster. Use the premix stuff or distilled
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Old 10-17-2006
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trust me, thats a lot safer then takin it somewhere.
at the dealer they suction the coolant and ur engine actually runs for like 5 min or so with no coolant or anything in it at all.
thats y im not going to do mine at work.
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Old 10-17-2006
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yeah, i did mine 2 weeks ago! lol its that time of year
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  #14  
Old 10-17-2006
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damn i need mine bad.....mines like wow right now
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  #15  
Old 10-18-2006
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Draining the radiator only removes a small portion of your coolant. you can drain it and fill with water from the hose and let it get upto operating temp and repeat the process untill you have clean water comming out when you open the petcock on the radiator. Leave your defroster on the warmest setting while doing so. That will flush all the old stuff from the heater core and block. After you get nothing but clean water repeat the process a couple of times with distilled water. Distilled water is much cheaper at your local grocery store the the stuff the autopart stores sell, usually about .99 a gallon. After you flush with the distilles water a couple times, drain the radiator again and put whatever antifreeze you prefer in. Make sure you get regular antifreeze, not the already mixed stuff being you will already have the distilled water in the system. Top it off with the antifreeze, let it come upto operating temperature again with the defroster on and cap off. You may have to drain a little more out after doing this, but make sure you get approx. 1 & 1/4 to 1 & 1/3 gallons of antifreeze in the system. Prestone does sell a kit to make the whole flushing process much quicker, but I have found that it simply does not work well with the way the newer cooling sytems operate. Another option is to switch to Evans NPG+ there product is a waterless antifreeze that offers much better protection and lasts longes than conventional antifreeze.
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Old 10-18-2006
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Quote:
Originally Posted by DUB Offroad Edition
What is the Proper Procedure to Flush a radiator?
Jiggle the handle.



Couldn't resist.
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  #17  
Old 10-18-2006
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Quote:
Originally Posted by rngprerunner
Jiggle the handle.



Couldn't resist.
haha that is funny as hell
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  #18  
Old 10-18-2006
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I do a mix of some of the suggestions here. I drain what's in the radiator, fill with cheap antifreeze and a gallon of distilled water. Turn on the defrost with the truck running and repeat once or twice depending on the condition of what comes out of the radiator. Then fill it with the new stuff.

I like to put in a bottle of Bar's Stop Leak radiator treatment after the process is finished and the good stuff is in the radiator. Awesome stuff, don't let the name fool ya. Just cuz you don't have a leak doesn't mean you don't need it. I've had nothing but good luck using this method.
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  #19  
Old 10-18-2006
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I don't see a point in adding anything that isn't needed. It would just be contaminating to new coolant. If it's for piece of mind, just put a bottle in your truck and use it if the need ever comes.
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  #20  
Old 10-18-2006
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Quote:
Originally Posted by RNGMSTR
I don't see a point in adding anything that isn't needed. It would just be contaminating to new coolant. If it's for piece of mind, just put a bottle in your truck and use it if the need ever comes.

huh??? u lost me.....
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Old 10-18-2006
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Quote:
Originally Posted by RNGMSTR
I don't see a point in adding anything that isn't needed. It would just be contaminating to new coolant. If it's for piece of mind, just put a bottle in your truck and use it if the need ever comes.
I think he means the Bar's stop leak.

If you already have a leak I'd use this other stuff. Not sure of the name but it comes in a small tube and looks like metallic flake sort of. I used that on one of my old f150's and worked like a charm on a tiny leak I had. After the laziness subsided, I soldered the radiator the correct way =]

Worked good in a pinch though.

The Bar's is more of a preventive maintenance thing. I dunno if I'd use that if I had a leak.
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  #22  
Old 10-20-2006
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Originally Posted by RNGMSTR
I don't see a point in adding anything that isn't needed. It would just be contaminating to new coolant. If it's for piece of mind, just put a bottle in your truck and use it if the need ever comes.
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  #23  
Old 10-20-2006
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Originally Posted by RNGMSTR
I don't see a point in adding anything that isn't needed. It would just be contaminating to new coolant. If it's for piece of mind, just put a bottle in your truck and use it if the need ever comes. Thats is what I was refering to. If you have no leak or have the time to fix it right, don't add that garbage to your system.
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  #24  
Old 10-20-2006
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What i would do personally is take drain the radiator and undo a lower radiator hose. To allow the engine block to leak some coolant. (im fairly sure these have lower hoses and not just mid to high hoses)....

Also if you use water use distilled water. You can drain the radiator and leave hoses off the system to flush out the rest. (Turn on the truck with hoses d/c).. However make SURE you fill the system all the way up. when you refill fill the radiator and make sure the Tstat opens before you call it a day, other wise you might over heat your truck.
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  #25  
Old 10-20-2006
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the petcock is located at the lowest point of the radiator. If you remove it instead of just unscrewing it a little, the radiaotr will drain very quickly. There really is no need to mess with the hoses. Bottom line is that if you don't take the time to compleatly flush the system, your only prolonging a future problem. Take the time, do it right and enjoy many years of trouble free life from you entire cooling system.
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