Re: [DML] Cooling System Care

[Andrew Prentis <aprentis@xxxxxxxxxxxxxx>]

I changed my car's coolant last weekend and used
distilled water with the anti freeze.Definately better
to use that than tap water since tap water has alot of
additives and impurities in it which can eat away at
the engine over time.
I've never used an additive in my car and don't think
it is necessary as long as you stick with a good name
brand coolant.In Australia a couple of years ago they
tested some cheap brands of coolant and found they
were just made of water with green dye in it!
I also think coolant should be changed more frequently
than 3-4 years.I change mine every 2 years.
More crucial though is to get the 50/50 mix of anti
freeze/anti corrosion and water correct.

Andrew
VIN 2883
Sydney,Aus.

--- Rod Dillman <rhdillman@xxxxxxxxx> wrote:

> When flushing a cooling system should the new
> coolant be mixed with tap water or distilled water
> or does it really matter? Several years ago I had a
> head gasket failure on an aluminium block Cadillac
> engine and the service manager told me  that if I
> had added GM Cooling System Seal Tabs(Part No.
> 3634621-a $4 part) with an engine flush every 3 or 4
> years it would likely have eliminated a $1500 head
> gasket repair. Since the DeLorean engine block is
> aluminium should a similiar additive be used in it? 
> Your thoughts will be appreciated.



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