Long life coolant in older vehicles

[doitmyself]

Peak also has a low silicate, conventional green formula that I have seen at Autozone. Ford has a conventional green coolant available at their parts counter (and a few stores) and WW Grainger has Zerex Green also (pay a bit more, but still reduces the $$ risk of your investment).

Here is an older article (for what it's worth) that touches on the idea of using a conventional green coolant for brass/copper radiators:
http://www.gates.com/brochure.cfm?brochure=2822&location_id=2877

Under the section about replacement parts and copper/brass solder:

"Conventional American coolant should provide better protection against solder corrosion, which can result in radiator tube restrictions and leaks. But no coolant provides perfect protection."

 

[3311]

Maybe Final Charge. http://www.peakauto.com/antifreeze-final_charge.shtml

Or PGL as well. http://www.peakauto.com/antifreeze-peak-global_lifetime.shtml

 

[another Todd]

Is there any benefit to adding a cooling system additive such as Napa Kool to any coolant being used for a gasoline engine---old or newer?

 

[Chris142]

AutoZone carries "Conventional green".

http://www.autozone.com/autozone/accesso...ier=540722_0_0_

 

[another Todd]

Thank you Chris and others. I'll use conventional green and add some RMI 25.

 

[Donald]

I would use John Deere CG II. Forget the additive. Its made for heavy duty equipment. And 6000 hours.