Antifreeze/Coolant MSDS (Silacates?)

[steve491]

I know this has been ran in the ground several times but I have a question about antifreeze.
I revived my 81 Interstate from a 5 year sleep and did the normal stuff: tank clean, brakes, fuel filter.....then it sat for another year in my garage while I ordered parts.
Friday I had time to R and R the water pump and timing belts. Everything went perfect, now it's time for fluids and another awakening.
Everyone on this forum (which I love) raves about coolant with NO silacates. I bought some "normal" antifeeze from Autozone and I think this fits the bill. the MSDS is attached, please let me know if this id OK for my new Honda water pump!
Thanks in advance, Steve

[flash1942]

I don't know about that particular brand and these days it seems that everything goes when it comes to advertising. Does the law say that you can put things in it that "may" be considered standard practice like phosphates and silicates and not put them on the label?? They get away with that on foods. I used Oreillys brand of full strength (must be diluted with distilled water to 50/50) and it says silicate and phosphate free on the bottle. In my opinion that nails it down with no doubt. Prestone brand that is readily available does not say that on the label.

[Bluewaterhooker0]

A short while back, I emailed Prestone for that very reason. The technical department replied that it is silicate free. Why they took it off the bottle, I'll never know.

[Mh434]

The generic stuff I used clearly stated "100% SILICATE-FREE", and was certified approved by Honda (or so it said) for all their engines. That made me feel safer, as the genuine Honda stuff wasn't available in my area at that time.

[steve491]

I'm a key grinder (locksmith) by trade, not a chemist, hence the original post.
I assume silicates in coolant are bad because they are abrasive. Is this correct? I'm also assuming the silicates/Phosphates are in the coolant stop corrosion. Plain old water is an excellent conductor of heat, but it makes things rust and it freezes.
Is the Di-potassium Phosphate safe for a new Honda water pump?

[steve491]

Follow-up.
I put the coolant in with mostly glycol (<2% Dipotassium Phosphate) and fired it up. No leaks, fired right up, went up to temp and thermostat opened. At first I thought I saw some green stuff bubbling around in the site glass. No smoke, no leaks....Put it up on the center stand and the next morning the oil looked fine with nothing laying on top (via site glass). I think I was expecting the worst...after all this bike is over 35 years old...and I was 14 years old when it was manufactured. I'm not giving up!