Ke70 Coolant Capacity; Distilled Or Deionized Water

[Tham]

Does anyone know the cooling capacity of the Corolla

KE70's 4K engine ? I drive a 1981 KE70 "DX" model.

 

 

I am thinking of using distilled water or deionized water

in my KE70's radiator to reduce corrosion and scaling.

 

However, I read a lot of controversy on the net. Some say

that it wouldn't really make much of a difference, while

others say it does.

 

In particular, some say that deionized water is actually

corrosive to a car's cooling system, as it would dissolve

the copper, iron and aluminium to get its ions back.

However, others say this is nonsense.

 

Any opinions ?

[trav_555]

Straight out of Gregory's scientific publications No221:

 

*Note for adm ke70*

 

Cooling capacity: 5.9 litres :bash:

 

Why don't you just use off the shelf coolant?

 

Travis.

[Tham]

Straight out of Gregory's scientific publications No221:

 

*Note for adm ke70*

 

Cooling capacity: 5.9 litres :bash:

 

Why don't you just use off the shelf coolant?

 

Travis.

 

 

 

Thanks much for the info, Travis.

 

You mean use just 100 % coolant in the radiator ?

 

I normally add one litre of coolant such as Valeo or Paraflu

to the radiator, then top up the rest with water.

 

Seems to be the practice here in Malaysia. Some even

use only half a litre, the size of many coolant cans here

in spare parts shops and supermarkets.

 

Don't think anyone here mixes 50/50 coolant and water,

or use entirely 100% coolant in their radiator, as is the

normal practice in Western countries due to freezing

temperatures.

Edited June 2, 2009 by Tham

[trav_555]

Nah i can buy premade up coolant in a bottle, off the shelf, like its already made up :bash:

 

So i guess i can't help you with your coolant issue, what does the packet/container say to use?

 

Travis.

[Tham]

The local coolant cans, typically 300 to 500 ml ones

like those by STP and Abro, just says add one can to

your radiator, then top up with water.

 

Nobody sells premixed coolants around here. Wouldn't

you have to buy 6 litres of that then ?

[rob83ke70]

I'd use a corrosion inhibitor, doesn't have to be an antifreeze as such. I'd use a reputable brand such as castrol, and use it as the instructions suggest. I'd use clean tap water, and I'd change the cooling system fluid at manufacturer reccommended intervals. Thats my 2c worth.

 

Robert.

[the witzl]

if you are using tap water in your coolant system you are an idiot.

 

You need to use DEMINERALISED water, so that it doesnt build up mineral deposits in your coolant system which will eventually block the cooling system, inhibit its operation, and potentially fark up your water pump and other parts.

[corolla_nut]

amount of difference it will make, sweet fark all, imho.

 

how old is the car? what condition is your water jackets and radiator and water pump in?? how much crud is already in there? how much crud is in your heater core?

 

Robert.

[Tham]

if you are using tap water in your coolant system you are an idiot.

 

You need to use DEMINERALISED water, so that it doesnt build up mineral deposits in your coolant system which will eventually block the cooling system, inhibit its operation, and potentially fark up your water pump and other parts.

 

 

Thanks for the info, everyone.

 

Yes, I've also thought of adding in an antirust

solution like Wynn's, Gold Eagle or Holts to the

coolant as well.

 

You mean demineralised water as in distilled or

reverse osmosis water ?

 

Car is a 1981 model, 28 years old.

 

Water jackets - one of the core plugs leaked and was

replaced half a year ago.

 

Water pump - replaced maybe three years ago.

 

Radiator - never replaced, but flushed and cleaned out

at a radiator shop two years ago, and they welded back

a leak near the bottom hose outlet. Radiator wasn't

particularly rusty when they poked the tubes with their

cleaning rod.

 

No heater core - they don't use it in Malaysia, too hot.

The cylinder head's inlet and outlets for the heater core

are sealed off with rubber plugs, as with most other

engines of its era.

 

Seems quite a bit of scaling can be seen in the expansion tank.

Edited June 5, 2009 by Tham