Packard Forum Index » Post-War (1946-54)

Eiligeins wrote:
West, Evans coolant is not all it's cracked up to be. There can be issues with its use in old cars. Check this out:norosion.com/evanstest.htm

I for one would never run 100% glycol in my old cars. Their engines are built for straight water coolant. Running anything else will cause problems.

Here's the response I got from Evans:

Water does transfer heat better, but it also boils and when internal metal temps get hot, the boiling water produces steam pockets in the system that can lead to hot spots in the heads and cylinders.

The Evans product has a higher boiling point, 375F, so it stays a liquid all the time. Consequently, it pulls more heat from internal metals, which in turn, leave behind cooler internal temps. Your gauge won't sense those temps as most gauges have the sensor located near the top outlet hose. So if Evans' coolant is pulling more heat from internal metals, you may see higher temps on the gauge, but the temperature of the coolant is being measured at its hottest point, when it is LEAVING the engine. You are not gauging the temps of the coolant inside the engine.

You may see warmer temps, you may see no change, or you may see lower temps. Way too many variables to know exactly what your car will do. All temp gauges are actually a reference. That sensor for the gauge DOES NOT sit in a still pond of coolant, it sits in a river of constant movement, and that's why you can see temps rise and fall.

Ozstatman wrote:
G'day Eiligeins,
to PackardInfo. Presume you own a Packard so invite you to include it in the Packard Owner's Registry here on PackardInfo.

su8overdrive wrote:
Rev. Earl, nothing wrong with Red Line(yours above). I used their stuff before i heard of No-Rosion in the mid-'90s. What's nice about No-Rosion is that it's good for five (5) years, and in the bargain, a better deal if you order it direct.

I still use Red Line Lead Substitute, which is a good, vetted product. Even engines with hardened valve seats can benefit from Red Line Lead Substitute should you be in the mountains or are otherwise pulling a lot of manifold pressure. Cheap insurance, and uses sodium instead of lead to cushion the valves during that nanosecond microweld each time they close.

But i've yet to find anything equal to No-Rosion and soft water for the cooling system. I learnt of it from a late friend who used nothing but in his Delahayes, Delage, Hispano-Suiza H6 and J12, Bugatti Type 101, a Packard Twelve, Marmon 16, Nash-Healey-- a real menagerie. Several took awards at Pebble Beach, but unlike most of those trailer queens, he insisted each of his cars run like the automobile it originally was, which i can vouch for.

That's reason #237 why i like PackardInfo.com. Most of us here believe in driving our cars now and then.