Rislone Super Coolant Additive?

Ok, so recently I changed my coolant and my coolant I used is Prestone 350,000 platinum. Will the Rislone lower it's ability to take cold temps this winter in Illinois? I only added to the overflow, and it says that it will take 4-5 heating cycles to take affect. I haven't started it yet, so IF SO, I can just drain it out on the ground which would be better than going through my system.

Any help is appreciated. I swear, I would rather come here for advice than any stealearship. You guys really know ya tacoma's. God Bless ya, one an all.........Brian

 

Those coolant additives only really help when you are running water for coolant. Adding it to a formulated coolant which already is full of additives doesn't do much. They claim to lower temps but your thermostat is regulating the temp already.

 

I think he means the additive will lower the freezing point of the coolant. I don't know Rislone’s claims for this product, but am weary of most claims by additive makers. I’d rather increase the anti-freeze concentration in the coolant.

 

Yeah, will it lower the freezing point?

Would you drain it?

 

The information I found on the Preston’s says it’s -50F
The Rislone say it does NOT provide any freeze protection.

The cooling system holds over 10 quarts of coolant.
There are 2 pints in a quarts. And a pint is 16 oz.
There is 16 oz in a bottle of Rislone.

So you diluted your coolant by 1/20th.
(Not exactly something I’d worry about)

What does all this mean?
Absolutely NOTHING.

Buy a coolant tester and test your coolant

$4 Prestone AF-1420 Antifreeze/Coolant Tester

https://www.amazon.com/Prestone-AF-...eeze+and+coolant+tester&qid=1667705655&sr=8-5

 

Thanks, and like I said before, I froze, no pun intended, and did not start my truck, SO it has not gone through my cooling system yet.

So if it ONLY changes it 1/20th will I be ok? My truck has 135k on it by the way. I did change my thermostat and upper and lower hoses.
I will buy a tester....thanks for the advice.

 

It's not going to hurt.. but it probably won't help anything

 

It depends what your current concentration level is. If you have 50/50, drain 2 qts and replace with 2 qts 100% anti-freeze. If you don't know what you have, then cheap coolant testers will show the current protection level.

 

The Prestone Platinum is 56% coolant and 44% water. Just looked @ my old jug.

 

There is no way to answer your question with out testing it.

They are cheap, most auto parts sell them. I bet Walmart even sells them.

I check mine every couple years.

 

I would drain the stuff.

You are answering your own question in a way...by not knowing the effects the additive will have on your coolant is all the answer you need. Why add something that may have unintended and unknown consequences (as evidenced by your concern about freeze point).

Why are you adding the stuff anyway? What are you trying to fix? Or achieve? Is your cooling system having problems? I suspect the additive (like most of them) is a solution looking for a problem.

 

Thats sounds too diluted. Most coolant mix recommendations are 50/50. That’s why I always get the 100% antifreeze concentrate. I think my system calls for 11 qts. After flushing the old coolant, I add 6 qts antifreeze, and top off the system with distilled water.

 

OP there is no need to over think this.
Buy a tester and test it.

I’m betting you’re at -20F at least.

Seriously, your options are drain and refill. Or test it.

I personally, don’t like doing things twice.
Not wasting money. I’d test it, and go from there.

 

Thanks guys, I haven't started the truck since I added into the overflow, so I might call rislone, or I might just drain it from the bottom of the overflow and then add to the overflow more Prestone.
Brian

 

Just drain it from the overflow reservoir.
That way you won’t worry about it any more.

 

Which Rislone additive did you get? The Hyper Cool Super Coolant? It claims to reduce engine temp by 30 degrees by reducing bubbles in the coolant which enables better heat transfer. It also claims to have lube additives to protect the water pump. It makes no claims to lower the coolant freezing point. I see no harm in using it. It competes with Red Line Water Wetter and Royal Purple Purple Ice.

But if lowering the freezing is what you are after, you’re gonna have to increase the concentrate of antifreeze in the coolant.

 

Yes, hyper super cool coolant. Thanks, I will use it. I just want to lower the engine temp for future wear, and overlanding expeditions hopefully in the future.

But if it lowers the engine temp, and its going into the fluid that helps temperature control, wouldn't it lower the temperature threshold or rating of the antifreeze?

 

If there was any indication if that, you can count on the manufacturer adding that to its claims.

 

Your making sense and thanks. You did say, that if I wanted to lower coolant temp, to add more straight coolant? If this is what you meant why?

 

Not to lower coolant temp, to lower the freezing point, and raise the boiling point. The higher the concentration level of antifreeze, the more protection. However, even though 100% antifreeze may provide the most protection, the max recommended concentration is 70/30 (antifreeze to water) because antifreeze is a not a good conductor of heat.
See https://www.aa1car.com/library/coolant.htm