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Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: craneman on March 31, 2016, 05:09:57 pm

Title: Aqua Hot coolant
Post by: craneman on March 31, 2016, 05:09:57 pm
I have changed the coolant on the engine and generator even though they both looked and tested good because of unknown age of the red OAT coolant. Is there any practical reason to do the same for the A.H. ? The freeze point shows just around a 50/50 mixture of the red OAT. There is no cavitation issues but maybe something I can't think of.
Title: Re: Aqua Hot coolant
Post by: Jim Frerichs on March 31, 2016, 05:43:05 pm
Hi Craneman,

If your AH is older hand therefore has the coolant coils around the outside of the tank, then you can use the Shell or any other coolant you are using elsewhere. But in the newer AH  units the coils are inside the AH tank where the potable water is, then you should not use non-potable coolant. I will leave it to others to suggest the brand and type because mine is filled with Shell Extended Life coolant. Perhaps Rudy will chime in with the answer.
Title: Re: Aqua Hot coolant
Post by: craneman on March 31, 2016, 05:49:19 pm
Quote from: Jim Frerichs –
Hi Craneman,

If your AH is older hand therefore has the coolant coils around the outside of the tank, then you can use the Shell or any other coolant you are using elsewhere. But in the newer AH  units the coils are inside the AH tank where the potable water is, then you should not use non-potable coolant. I will leave it to others to suggest the brand and type because mine is filled with Shell Extended Life coolant. Perhaps Rudy will chime in with the answer.
The coils are on the outside and it was filled with Texaco extended life originally, the only thing I can be certain of is it is red and is good for -34 freezing
Title: Re: Aqua Hot coolant
Post by: Travelin' Man (RIP) on March 31, 2016, 07:55:54 pm
With the extended life coolant I think you need 4-way test strips to determine your coolants health.
Good luck finding one or two...................you may have to buy 50 and they have a short shelf life.
Title: Re: Aqua Hot coolant
Post by: Rudy on March 31, 2016, 08:36:14 pm
The Aqua Hot coolant does not interact with much as does engine coolant.  Therefore is lasts a very long time.  It needs to keep its Ph at the level when it was installed.  Roger Berke knows the correct number but I do not.  My guess is near neutral which is close to 7 I think.

So most likely you do not need to change unless you just want to.
Title: Re: Aqua Hot coolant
Post by: craneman on March 31, 2016, 08:43:49 pm
Quote from: Rudy –
The Aqua Hot coolant does not interact with much as does engine coolant.  Therefore is lasts a very long time.  It needs to keep its Ph at the level when it was installed.  Roger Berke knows the correct number but I do not.  My guess is near neutral which is close to 7 I think.

So most likely you do not need to change unless you just want to.

Thanks for the information.
I will get the Ph number required and see where I am at. I bought some of the extender that is required after 300,000 miles or 3 years I don't know if it is for corrosion protection or some other properties. I have searched the net for a reason for the extender to no avail.
Title: Re: Aqua Hot coolant
Post by: Rick & Robyn on April 01, 2016, 06:39:54 am
Info on pH and test strips.  Excellent service and information.

Coolant Test Strip Kit (http://www.parts.rvhydronicheaterrepair.com/Coolant-Test-Strip-Kit-Coolant-Test-Kit.htm)
Title: Re: Aqua Hot coolant
Post by: craneman on April 01, 2016, 10:23:04 am
Quote from: Rick & Robyn –
Info on pH and test strips.  Excellent service and information.

Coolant Test Strip Kit (http://www.parts.rvhydronicheaterrepair.com/Coolant-Test-Strip-Kit-Coolant-Test-Kit.htm)
I am a member there and have the strips. Great place to learn all about Aqua-Hot
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