Coolant for aluminum radiator on 350 Chevy

[T-Bucket Bob]

Hey guys, what is a good coolant and ratio for a aluminum radiator and 350 Chevy.

Thanks

 

[Spanky]

I don't have an aluminum radiator, but I understand from those that do that any of the top brands will work well, diluted to a 50/50 mix with DISTILLED water.

 

[Indycars]

A zinc anode in the cooling system is always a good idea when you have dissimilar metals, which
you almost always do.You would rather sacrifice a $10 anode, than the $300 radiator.

Northern Radiator | Sacrificial Anode Radiator Caps

https://www.summitracing.com/parts/rra-18-6136/overview/

 

[JetMech727]

I agree with Spanky. I use the Prestone. The one check marked for all vehicles (american, asian, european). It also has corrosion inhibitors in it. And is safe for aluminum, steel or combination of both.

 

[PotvinGuy]

Depends on where you live too. In Texas I ran distilled water and Red Line Water Wetter. No antifreeze needed (did you know water is a better coolant than antifreeze?). Now that I'm in MN I run a mix of antifreeze and distilled water. And use one of those cheap gadgets to check the freeze point, like this one:

 

[fletcherson]

A zinc anode in the cooling system is always a good idea when you have dissimilar metals, which
you almost always do.You would rather sacrifice a $10 anode, than the $300 radiator.

Northern Radiator | Sacrificial Anode Radiator Caps

https://www.summitracing.com/parts/rra-18-6136/overview/

View attachment 17512

Good idea. Good grounds in various places will also help fight electrolysis.