I'm going to try a bit less than 2 gallons which should give me about 50-50
and then test it with one of the suggested testers.  Don't want the new
engine to look like the old one did inside.

Thanks to all.

Mike

On 8/11/03 4:12 PM, "Dennis Haynes" <dhaynes@OPTONLINE.NET> wrote:

> Buy one of the coolant strength testers at the FLAPS. Under $10 for a
> good one by Prestone. This will tell you the concentration you have now
> and then you can calculate what you need to bring it up. After changing,
> run the engine to make sure everything is mixed well before testing
> again.