flushing radiator fluid

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Old 26 Oct 2004, 01:44 am   #1 (permalink)
Kain0o0
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Default flushing radiator fluid

Well i messed up and put green anti-freeze. Suggestions are that i drain and
refill the radiator.
My questions are:
-someone said fill with 50/50 . whats that , not regular red?
-someone said i should run water through it. Does that mean i should run the
car while pouring water . Or fill->run->drain and repeat till i see no
residue.?
-the drain on a 95 camry is on the bottom , under the radiator right?

Thank you for all help on this matter


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Old 26 Oct 2004, 07:47 am   #2 (permalink)
Daniel M. Dreifus
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Default Re: flushing radiator fluid

"Kain0o0" <Kain0o0@Kain.com> wrote in message news:<Enmfd.47254$5v2.22767@fe2.columbus.rr.com>.. .
> Well i messed up and put green anti-freeze. Suggestions are that i drain and
> refill the radiator.


That is correct. However, you're actually draining and refilling the
cooling system, including the water jacket in the engine, not just the
radiator.

> My questions are:
> -someone said fill with 50/50 . whats that , not regular red?


50/50 refers to mixing Toyota red coolant with an equal amount of
distilled water, in other words, to a 50% concentration. This is the
most common recommendation. For reasons I've not been able to
understand, the Factory Service Manual for my '94 suggests a
concentration of coolant "greater than fifty per cent, but less than
seventy per cent" - clearly states this twice in different sections.
So I use 60% coolant, 40% distilled water. Technically, water cools
much better than glycol based antifreeze, but apparently there's
enough reserve in the Toyota design that it still works fine even
under harshest conditions and presumably enhances corrosion protection
offered by the Toyota coolant for aluminum surfaces inside the engine
and radiator.

> -someone said i should run water through it. Does that mean i should run the
> car while pouring water .


No. Sometimes people like to run a garden hose through the radiator to
rinse away rust and debris. The Toyota drain hole is very small, so
this probably won't work very well. All operations with the cooling
system should be done with the engine cold - not running. Your Toyota
has an aluminum radiator and plastic radiator upper and lower tanks,
so it's unlikely you'd find rust anyway, unless the cooling system
maintenance was severely neglected.

Or fill->run->drain and repeat till i see no
> residue.?
> -the drain on a 95 camry is on the bottom , under the radiator right?


Yes. Much better idea, but use pre-mixed coolant, not plain water, so
you don't dilute the effective concentration with the residual amount
that stays in the engine even after draining. There is a second drain
plug on the engine block, but seems redundant to me. Only a few drops
came out when I opened it, and is difficult to access.
Turn the heater controls on to full heat, let the engine cool, place a
container under the radiator and patiently wait for all the old
coolant to dribble out from the radiator drain plug. (I use a plastic
tub for mixing concrete from a Home Improvement store - large low
profile wide container.)
Probably a good idea in your case to repeat the process a second time.
Just opening the radiator drain will not get all the old coolant out,
but will get most of it, so go ahead and do it twice.
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Old 26 Oct 2004, 10:38 am   #3 (permalink)
Kain0o0
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Default Re: flushing radiator fluid

Any tools i need to remove drain plug?
As i don have any at all right now , i think someone stole my tool box when
i moved , short of a pair of vice grips
Damned cincinnati.


"Daniel M. Dreifus" <nospampls2002@yahoo.com> wrote in message
news:c5ef7dc0.0410260447.61296e00@posting.google.c om...
> "Kain0o0" <Kain0o0@Kain.com> wrote in message
> news:<Enmfd.47254$5v2.22767@fe2.columbus.rr.com>.. .
>> Well i messed up and put green anti-freeze. Suggestions are that i drain
>> and
>> refill the radiator.

>
> That is correct. However, you're actually draining and refilling the
> cooling system, including the water jacket in the engine, not just the
> radiator.
>
>> My questions are:
>> -someone said fill with 50/50 . whats that , not regular red?

>
> 50/50 refers to mixing Toyota red coolant with an equal amount of
> distilled water, in other words, to a 50% concentration. This is the
> most common recommendation. For reasons I've not been able to
> understand, the Factory Service Manual for my '94 suggests a
> concentration of coolant "greater than fifty per cent, but less than
> seventy per cent" - clearly states this twice in different sections.
> So I use 60% coolant, 40% distilled water. Technically, water cools
> much better than glycol based antifreeze, but apparently there's
> enough reserve in the Toyota design that it still works fine even
> under harshest conditions and presumably enhances corrosion protection
> offered by the Toyota coolant for aluminum surfaces inside the engine
> and radiator.
>
>> -someone said i should run water through it. Does that mean i should run
>> the
>> car while pouring water .

>
> No. Sometimes people like to run a garden hose through the radiator to
> rinse away rust and debris. The Toyota drain hole is very small, so
> this probably won't work very well. All operations with the cooling
> system should be done with the engine cold - not running. Your Toyota
> has an aluminum radiator and plastic radiator upper and lower tanks,
> so it's unlikely you'd find rust anyway, unless the cooling system
> maintenance was severely neglected.
>
> Or fill->run->drain and repeat till i see no
>> residue.?
>> -the drain on a 95 camry is on the bottom , under the radiator right?

>
> Yes. Much better idea, but use pre-mixed coolant, not plain water, so
> you don't dilute the effective concentration with the residual amount
> that stays in the engine even after draining. There is a second drain
> plug on the engine block, but seems redundant to me. Only a few drops
> came out when I opened it, and is difficult to access.
> Turn the heater controls on to full heat, let the engine cool, place a
> container under the radiator and patiently wait for all the old
> coolant to dribble out from the radiator drain plug. (I use a plastic
> tub for mixing concrete from a Home Improvement store - large low
> profile wide container.)
> Probably a good idea in your case to repeat the process a second time.
> Just opening the radiator drain will not get all the old coolant out,
> but will get most of it, so go ahead and do it twice.



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Old 26 Oct 2004, 12:46 pm   #4 (permalink)
Jason James
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Default Re: flushing radiator fluid


"Kain0o0" <Kain0o0@Kain.com> wrote in message
news:Enmfd.47254$5v2.22767@fe2.columbus.rr.com...
> Well i messed up and put green anti-freeze. Suggestions are that i drain

and
> refill the radiator.
> My questions are:
> -someone said fill with 50/50 . whats that , not regular red?
> -someone said i should run water through it. Does that mean i should run

the
> car while pouring water . Or fill->run->drain and repeat till i see no
> residue.?
> -the drain on a 95 camry is on the bottom , under the radiator right?
>
> Thank you for all help on this matter


Engine coolant mixtures are bit confusing, but it boils down (excuse the
terrible pun) to this: the stuff you find at auto-barns comes in roughly 3
strengths which are also indicated as how many years you can leave it in eg
2-3-4 yrs. The longer or the more concentrated mixes cost more and contain
more glycol/ anti rust/anti freeze,..the less expensive an accordingly less
concentration and shorter time.

Personally, I go for 2 year stuff as I reckon in my '96 there is a
reasonabley high chance of having to dump the stuff out due other engine
issues,...before 2 years expires.

The other approach is to just use Toyota coolant and go by their time
interval recommendations. This is probably more appropriate for newer
models,..and not neceassarily lower mileage, as time seems to be the
governing factor here more than mileage.

Draining is a matter of opening the radiator and engine block taps,..make
sure the radcap is off,..then wait untill the drains have stopped dripping.
The engine tap is behind the block at the transmission end,..under the
intake manifold. The radiator tap is located in the RHS (as viewed facing
the car from front) of the bottom tank

Reverse flush the radiator if you suspect there is sludge or gunk present.
Doing the same to the engine may dislodge any loose scale/rust as well. In
this event the thermostat has to be removed first.

One fallacy regarding coolant changes is that somehow just doing this will
cure a car's cooling problems,...not so, in fact leaving plain water
(preferabley rainwater) in will be a safer thing to do in the shortrun as
water is the best heat transfer medium.
OTOH, reverse flushing the radiator and block (t/stat removed) *may* improve
things.

Jason


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Old 26 Oct 2004, 11:55 pm   #5 (permalink)
Viperkiller
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Default Re: flushing radiator fluid

On Tue, 26 Oct 2004 15:38:00 GMT, "Kain0o0" <Kain0o0@Kain.com> wrote:

>Any tools i need to remove drain plug?
>As i don have any at all right now , i think someone stole my tool box when
>i moved , short of a pair of vice grips
>Damned cincinnati.
>
>

You should be able to remove the drain plug by hand. If not, pliers
(or vice grips) will do. I suggest using a cloth in between to reduce
the chances of fraying the plastic cap.


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Old 27 Oct 2004, 10:40 am   #6 (permalink)
Daniel M. Dreifus
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Default Re: flushing radiator fluid

Looks like the first time I posted a response it didn't go through,
but happended to have a copy:

"Kain0o0" <Kain0o0@Kain.com> wrote in message news:<Enmfd.47254$5v2.22767@fe2.columbus.rr.com>.. .
> Well i messed up and put green anti-freeze. Suggestions are that i drain and
> refill the radiator.


That is correct. However, you're actually draining and refilling the
cooling system, including the water jacket in the engine, not just the
radiator.

> My questions are:
> -someone said fill with 50/50 . whats that , not regular red?


50/50 refers to mixing Toyota red coolant with an equal amount of
distilled water, in other words, to a 50% concentration. This is the
most common recommendation. For reasons I've not been able to
understand, the Factory Service Manual for my '94 suggests a
concentration of coolant "greater than fifty per cent, but less than
seventy per cent" - clearly states this twice in different sections.
So I use 60% coolant, 40% distilled water. Technically, water cools
much better than glycol based antifreeze, but apparently there's
enough reserve in the Toyota design that it still works fine even
under harshest conditions and presumably enhances corrosion protection
offered by the Toyota coolant for aluminum surfaces inside the engine
and radiator.

> -someone said i should run water through it. Does that mean i should run the
> car while pouring water .


No. Sometimes people like to run a garden hose through the radiator to
rinse away rust and debris. The Toyota drain hole is very small, so
this probably won't work very well. All operations with the cooling
system should be done with the engine cold - not running. Your Toyota
has an aluminum radiator and plastic radiator upper and lower tanks,
so it's unlikely you'd find rust anyway, unless the cooling system
maintenance was severely neglected.

Or fill->run->drain and repeat till i see no
> residue.?
> -the drain on a 95 camry is on the bottom , under the radiator right?


Yes. Much better idea. There is a second drain plug on the engine
block, but seems redundant to me. Only a few drops came out when I
opened it, and is difficult to access.
Turn the heater controls on to full heat, let the engine cool, place a
container under the radiator and patiently wait for all the old
coolant to dribble out from the radiator drain plug. (I use a plastic
tub for mixing concrete from a Home Improvement store - large low
profile wide container.)
Probably a good idea in your case to repeat the process a second time.
Just opening the radiator drain will not get all the old coolant out,
but will get most of it, so go ahead and do it twice.
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