Will Evans lower my engine temperature?
Typically no. Vehicles running under normal operating conditions should show either no change or a slight increase in temperature, but that will depend on cooling system configuration as well as driving conditions. Certain systems that use incompatible components, have an existing problem, or are poorly designed could run hotter. The ability to lower the operating temperature depends on multiple factors, primarily coolant flow volume and air flow temperature. For example, multi pass radiators will result in higher temperatures due to decreased coolant flow volume vs. large tube multi row radiators that improve coolant flow. Different thermostats may increase flow volume because of less restriction.
Water-based coolant boils at a temperature only slightly higher than the operating temperature of the coolant. Localized boiling releases water vapor that can only condense into coolant that is colder than the boiling point of water. Vapor that doesn’t condense occupies a volume that displaces liquid coolant. Hot engine metal, insulated by water vapor, becomes an engine “hot spot” that can cause pre-ignition and detonation. Evans’ high boiling point means it will not turn to vapor.
Evans doesn't work real good with the stock radiators in a Ram 1500.I tried it out years ago in a 74 AMC Hornet with a healthy 401 and a stock rad,and it didn't really work all that well,anti-freeze and water actually ran cooler then the Evans waterless coolant did,sure with a high dollar custom radiator it might of ran cooler operating temps then the water/antifreeze combo did,but the car never really ran all that hot with the factory set-up,so it wasn't worth the hassle or cost of having a custom radiator fabbed up
What radiator type is best to use with Evans?
Evans recommends single-pass radiators as they have less flow resistance than multi-pass radiators. The following are minimum radiator core suggestions:
300HP or less without AC.........................4 rows: ½” tube copper/brass
300HP to 400HP with AC..........................2 rows: 1” tube aluminum
400HP to 600HP....................................... ..2 rows: 1.25” tube, aluminum
600HP and above........................................3 rows: 1” tube aluminum
OR 2 rows: 1.5” tube aluminum