Re: Coolant Recommedation
 

Timing for this is perfect.. I need to pull the top end off to fix a leaky gasket (breather box) so I may as well replace the coolant this time

Re: Coolant Recommedation
 

Any value in use Water Wetter? I have used it with much success back in the day with my racebikes. We did change the coolant religiously every 3 months though to avoid any corrosion.

Re: Coolant Recommedation
 

Many benefits to the Water Wetter as a "coolant" BUT it does freeze. As a coolant it's my understanding that it cools less the "pressurization" required by water and conventional coolant mix. I understand that actually if Water Wetter were in a cooling system and if you needed to "top off" with a conventional "deionized/distilled" water mix the Water Wetter can be reclaimed by bringing the product to slightly higher than 212* and boil off the water. I've no first hand knowledge of that but it seems likely.

Perhaps some one that is a "user" could comment more directly!

Re: Coolant Recommedation
 

To the top

MANY ask about this

Please make this a sticky

:cheers:

David

Re: Coolant Recommedation
 

Has anyone tried running evan's coolant? It uses no pressure as a coolant. I know some guys in the 2 stroke world and turbocharged world swear by it. There are power gains as well as less stress on components from it. It is not corrosive either.

http://www.evanscooling.com/

Re: Coolant Recommedation
 

done :cheers:

Re: Coolant Recommedation
 

The Evans coolant is a waterless liquid with an approx. 356°F boiling point at 1 BAR (14.7 psi) natural atmospheric pressure at STP(Standard Temp and Pressure-equivalent to driving around without a rad cap, thus allowing no cooling system pressure to build). It's mostly Propylene glycol.
Good thing about Propylene glycol is that its many times less toxic than the conventional Ethylene Glycol coolants. Its generally regarded as safe for canines and other pets. (by no means should this relax safety around pets and children, Evans coolant is not pure PG when new, and would be regarded as contaminated after a service interval in an LT5 or any other engine. But if my dog accidentally ingested a coolant, I would rather it be Evans.)

So safe in fact that many of the intravenous and Intramuscular medications that I give to people use Propylene Glycol as a diluent for meds that do NOT dissolve in water. PG is also used to carry the nicotine and flavours in the "juice" that smokers use in electronic cigarettes.

Because of its higher no pressure boiling point, nucleate boiling is prevented. As soon as any liquid boils, the resultant vapour or gas drastically reduces heat transfer from the metal into the liquid.
Think of nucleate boiling as the small bubbles that occur on the bottom of a pot of water on the stove. Water boils at 212ºF, and although the entire pot of water may not be 212º, the liquid temps right along the bottom of the pot are high enough to boil.

It is important to note that both Propylene and Ethylene Glycols are corrosive to metals when exposed to air/oxygen if not mixed with inhibiter.

Air cools rad fins, rad cools coolant, coolant cools engine, its all about thermodynamics.

EDIT: I simply concentrated of one aspect of the Evans cooling "system", there are many other advantages other than just the boiling point and low toxicity)

Re: Coolant Recommedation
 

What would a "coolant thread" be without my lunatic-fringe alternative.

For most of the 20 years I've owned "Barney" my purple '95, I've never run any antifreeze at all in the cooling system. Just straight water and one bottle of one of the two leading coolant additives, Gibbs Driven "CSP" or Red Line "Water Wetter".

Why straight water?

Water is a better coolant because it absorbs more BTUs per gallon than does a 50/50 mix of water and antifreeze. Of course, when you don't use antifreeze you MUST have some other form of the anti-foaming and anti corrosive chemicals that come in antifreeze. Radiator Relief or Water Wetter supply that chemistry. In fact, Water Wetter uses a calcium-based corrosion inhibiter similar to that in Dexcool. Additionally, both products contain a "weting agent" which further improves water's ability to cool by enhancing the transfer of heat from the cylinder head and block to the cooling jackets.

Now...the cautionary statements:

1) For obvious reasons, you can't use straight water if your car is subjected to below freezing temperatures when it's parked overnight or stored.

2) You must change that coolant mix every 24-months regardless of mileage.

Re: Coolant Recommedation
 

I was surprised to find Dex-Cool in the Lingenfelter...the fluids had just been changed when I bought it, so I didn't worry about it for quite some time, then when I found Dex-Cool, I just supposed to change it at the next available time.....well that was when I changed the starter a while back.....I flushed it three times with straight water and the water ran very clear. I decided to do the fill with Pentosin Pentofrost NF. What sold me was "Mercedes Benz all years" "Porsche 924,928,944,968 all years" "BMW all years"
http://www.pentosin.net/f_antifreeze.asp
Thoughts?
:happy1:

https://im1.shutterfly.com/media/47a...D720/ry%3D480/

Re: Coolant Recommedation
 

Here's an update about green formula coolant availability. I believe that it is still important to stay with the OE type color coded green coolant. Green coolant can be hard to find. Some auto supplies will try to sell "universal" or some other coolant because that is all they have. It might take some searching but green coolant is still available.

As of this date AutoZone has it in their house brand. Part number A003.

NAPA has it in their house brand. Part number NAF1GAL. The NAPA near me also has the Zerex brand. Part number ZRX ZX001.

A local independent auto supply stocks it because they want to support the classic car market. It's labeled FVP Original Green Formula. Part number FVPGreen-Gal. It's distributed by FVPparts.com.