Which Coolant?

[67_Slimer]

OK! Probably was viewed so many times but I'm just curious and need a 100% accurate answer. Which coolant do I use in my Aluminum headed/Aluminum Radiator 340? Seems like there's a red coolant in there now but it's due for a change plus I'm replacing my water pump and hoses. I want to make sure that it's good for the block and the Aluminum heads/Radiator. I plan on flushing as much of the old stuff as I can. Thank you!

 

[Scody21]

We use the red / Asian coolant in the race cars cus when diluted it looks like water wetter in the overflow. All are about the same. So pick one and stick with it

 

[Dana67Dart]

I would look at what the modern AL FE engines are using.

 

[Kendog 170]

I read a post here a while back that the Red coolant is less corrosive on aluminum than the green.

 

[Newbomb Turk]

I’ll say it. Use Evan’s and don’t look back.

It’s expensive but worth it IMO.

 

[Inertia]

Don't mix the green and red or you get brown, that looks like rusty coolant that needs flushing .

 

[67_Slimer]

I’ll say it. Use Evan’s and don’t look back.

It’s expensive but worth it IMO.

Good for aluminum as well?

 

[Newbomb Turk]

Good for aluminum as well?

Yes sir.

 

[CFD244]

I'd call the Prestone tech line.