David,
In a pinch once I used FI hose for one of those. Don't. The coolant
didn't bother it, but in a year the heat baked it hard.

 From an independent auto shop, I got "5/16 inch (8.0mm) premium heater
hose made in the USA by the Gates corporation."  67 cents a foot! Also
works for all those little hoses to the perimeter pipe.

GP
87 Wolfsburg

On 9/1/2013 10:21 AM, David M wrote:
> I'm about to refill my lost coolant. I'll be adding Prestone Extended Life in 50-50 dilution.
> We have very hard water, should I use distilled water to refill?
> Also, what are the specs of the hose that goes from the refill tank to the overflow tank?
> Cannot find it on the Bus Depot site.
>
> I asked at O'Reilly and all they had of the right size was fuel injection hose at $4.50 a foot. I would need 2 feet (really I only need about 20 inches).
>
> David (1987 Wolfsburg)
>
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