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What Coolant?

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4 weeks 2 days ago #21261 by SlingPilot
What Coolant? was created by SlingPilot
What Coolant should I use to top off my Sling’s 912:ULS? It looks more pink in color than orange. Is it Dex-Cool? I did add some distilled water, after I noticed it at the minimum mark after my coast to coast flight.

I want to keep a bottle of “whatever” should I need to add more in the future.

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4 weeks 2 days ago #21262 by Roger Lee
Replied by Roger Lee on topic What Coolant?
Yes they have pink coolant. It was usually automotive OEM stuff, but it's out there. If you need to top off use more pink or distilled water. I wouldn't mix this with others.
Or you could drain it and add some regular Dex Cool 50-50 (extended life (orange). Up to you.


APPLICATION: Asian automotive and light duty vehicles requiring a phosphate based OAT engine coolant

VEHICLE MAKES: Lexus, Toyota, Scion

FORMULATION: Ethylene glycol based. Silicate, borate, nitrite & amine free

PRODUCT COLOR: Pink

SPECIFICATION/PERFORMANCE LEVEL: ASTM D3306, JIS K2234

RECOMMENDED CHANGE INTERVAL: 150,000 miles* or 5 years of service protection

COMPATIBILITY: For best results, do not mix with conventional high pH, borate or silicate based coolants.

PERFORMANCE FEATURE: Aluminum Compatible

PRODUCT OPTIONS: Concentrate & 50/50 Pre-Diluted

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-574-1080 Home (TRY HOME FIRST)
520-349-7056 Cell

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4 weeks 1 day ago #21264 by SlingPilot
Replied by SlingPilot on topic What Coolant?
Thanks Roger. I think I’ll just add distilled water for now. I found OEM here : www.recochem.com/us/products/automotive_...nk_antifreezecoolant

A location search shows several places to purchase near me. Now, should I go concentrate or 50-50 pre-mix?

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4 weeks 1 day ago #21267 by Roger Lee
Replied by Roger Lee on topic What Coolant?
50-50

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-574-1080 Home (TRY HOME FIRST)
520-349-7056 Cell

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4 weeks 1 day ago - 4 weeks 1 day ago #21268 by Bill Hertzel
Replied by Bill Hertzel on topic What Coolant?
SlingPilot,
We had a lively discussion about coolants a while ago.
You might want to read that thread.

www.rotax-owner.com/en/rotax-forum/4-gen...n/6131-coolant#15749
Last edit: 4 weeks 1 day ago by Bill Hertzel.

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4 weeks 1 day ago #21269 by SlingPilot
Replied by SlingPilot on topic What Coolant?

Bill Hertzel wrote: SlingPilot,
We had a lively discussion about coolants a while ago.
You might want to read that thread.

www.rotax-owner.com/en/rotax-forum/4-gen...n/6131-coolant#15749


Yes, thanks Bill, I’ve read that thread. My issue is, I’m trying identify the antifreeze in my aircraft. I know the type, 50/50 mix, but nowhere in either the plane maintenance or Rotax manual does it list specific manufacturer. Rogers answer put me on the right track. For now I’ll just be adding distilled water. The factory is closed for the holiday, I’ll reach out to them when they reopen. I want to keep a gallon or so on hand.

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4 weeks 1 day ago #21270 by Gyrochook.
Replied by Gyrochook. on topic What Coolant?
Bill thanks for that link to the coolant discussion.
I have a different problem being the owner of an ELA gyrocopter. That Spanish company insists on connecting their Rotax engines to the rearward radiator with a brass or copper 20mm pipe on both sides. In this case several of the common coolants are not recommended when there are copper metals associated with the coolant path. I use Nulon long life coolants and change them out every 2 years. We also connect our radiator caps to earth to protect that rather expensive to replace expansion tank if electrolysis gets involved.

Regards.........Chook.

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2 weeks 1 day ago #21428 by SlingPilot
Replied by SlingPilot on topic What Coolant?
So, this past weekend I had the top cowl off. What looked like PINK coolant now looks ORANGE after taking off the reserve bottle cap and looking down with a flashlight. I guess my job just got easier, rather then having to source Pink or red coolant, I can add DEX-COOL, which is ORANGE, correct? And, I can get it 50-50 pre-mixed?

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2 weeks 1 day ago #21434 by Roger Lee
Replied by Roger Lee on topic What Coolant?
Dex Cool 50/50 orange is their extended life coolant. If you just want to top off you could also use distilled water.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-574-1080 Home (TRY HOME FIRST)
520-349-7056 Cell

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1 week 5 days ago #21479 by SlingPilot
Replied by SlingPilot on topic What Coolant?
Thanks, that’s what I wound up doing Roger.

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