Cooling system
Safety Car
Joined: Jan 2015
Posts: 3,830
Likes: 394
From: Rocky Mountains
No way I'd use Evans in my C5.
It seems popular with antique car enthusiasts. Antique as in pre-WW2 cars non-pressurized systems. It's supposed to reduce corrosion between iron/aluminum/copper. But a C5 engine is all aluminum.
In a modern car with a properly functioning coolant system and radiator, IMO the potential problems far outweigh the benefits like its 350 degree boiling point or whatever specification Evans gives. Your coolant temp will actually be higher with Evans that antifreeze. Lots of people report problems with leaks and wear on the water pump. And you have to purge every drop of H2O before switching to Evans or it will create harmful byproducts. Just way too much trouble to hassle with for the supposed benefits.
I drive my car in 115 degree. Last summer, I got stuck in a slow moving fast food drive thru where I was basically just idling in extreme heat for 25-30 minutes, and the coolant still never went above like 232-233. Even when I'm driving hard in that summer heat and get my oil temp up to 250, the coolant temp has never given me concern.
Basically, if your car is overheating, I'd find and fix the source of the problem.
It seems popular with antique car enthusiasts. Antique as in pre-WW2 cars non-pressurized systems. It's supposed to reduce corrosion between iron/aluminum/copper. But a C5 engine is all aluminum.
In a modern car with a properly functioning coolant system and radiator, IMO the potential problems far outweigh the benefits like its 350 degree boiling point or whatever specification Evans gives. Your coolant temp will actually be higher with Evans that antifreeze. Lots of people report problems with leaks and wear on the water pump. And you have to purge every drop of H2O before switching to Evans or it will create harmful byproducts. Just way too much trouble to hassle with for the supposed benefits.
I drive my car in 115 degree. Last summer, I got stuck in a slow moving fast food drive thru where I was basically just idling in extreme heat for 25-30 minutes, and the coolant still never went above like 232-233. Even when I'm driving hard in that summer heat and get my oil temp up to 250, the coolant temp has never given me concern.
Basically, if your car is overheating, I'd find and fix the source of the problem.
Thread Starter
Instructor
Joined: Apr 2007
Posts: 206
Likes: 3
From: Erie PA
No. I am having no problems, I just wanted opinions on this product and as usual this forum stepped up. Thanks to all for the help and I will just stay with a tried and proven anti freeze.
