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Testing premixed coolant with tester often shows.. #4684632
03/04/18 10:25 PM
03/04/18 10:25 PM
Joined: Jul 2007
Posts: 220
NY
TurboTravis Offline OP
TurboTravis  Offline OP
Joined: Jul 2007
Posts: 220
NY
That it is mixed stronger than 50/50 (which should test -34F), anyone else ever seen this? I have some premixed in the garage now, I will test it here in a bit and post the exact number that I get.

Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684639
03/04/18 10:32 PM
03/04/18 10:32 PM
Joined: Jun 2003
Posts: 17,351
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,351
Deplorable in apple valley, ca
The long life coolants show -70F on my refractometer when mixed 50/50.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684655
03/04/18 10:45 PM
03/04/18 10:45 PM
Joined: Sep 2005
Posts: 5,667
MIchigan
Warstud Offline
Warstud  Offline
Joined: Sep 2005
Posts: 5,667
MIchigan
Are you sure your using the right tester? Theres certain testers for certain antifreeze.

Re: Testing premixed coolant with tester often shows.. [Re: Warstud] #4684736
03/05/18 01:03 AM
03/05/18 01:03 AM
Joined: Jul 2007
Posts: 220
NY
TurboTravis Offline OP
TurboTravis  Offline OP
Joined: Jul 2007
Posts: 220
NY
Yes.

Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684737
03/05/18 01:04 AM
03/05/18 01:04 AM
Joined: Jul 2007
Posts: 220
NY
TurboTravis Offline OP
TurboTravis  Offline OP
Joined: Jul 2007
Posts: 220
NY
Valvoline Asian 50/50 premix shows -45F on my tester.

Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684942
03/05/18 09:59 AM
03/05/18 09:59 AM
Joined: Jan 2016
Posts: 232
Ada county Idaho
MRtv Offline
MRtv  Offline
Joined: Jan 2016
Posts: 232
Ada county Idaho
I have a 30 year old Prestone tester. I tested my G05 coolant mixed at somewhere near 50/50 in my F150. Tested at -34. Tested my Pentosin in the Versa Note which is a 50/50 mix from the bottle. Tests at just around -34 also. The tester works with a large needle indicator pointing to the temperature.


2014 Nissan Versa Note 1.6 liter engine. 1997 Ford F150 4x4 4.6 liter engine.
Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684944
03/05/18 10:02 AM
03/05/18 10:02 AM
Joined: Aug 2012
Posts: 447
North Carolina
Urshurak776 Offline
Urshurak776  Offline
Joined: Aug 2012
Posts: 447
North Carolina
I have the Prestone tester. Picked it up at Walmart. You got me curious so i tested some 50/50 O'Reilleys Universal i have. Tested to -34.


2012 Hyundai Santa Fe, 130,000 miles, Havoline Pro DS Full Syn 5W-20, Auto7 Filter.
2014 Kia Rio, 80,000 miles, Havoline Pro DS Syn 5W-30, WIX Filter
Re: Testing premixed coolant with tester often shows.. [Re: TurboTravis] #4684955
03/05/18 10:10 AM
03/05/18 10:10 AM
Joined: Jan 2016
Posts: 232
Ada county Idaho
MRtv Offline
MRtv  Offline
Joined: Jan 2016
Posts: 232
Ada county Idaho
I have used my Prestone tester over the years and have had various mixes in various vehicles. It has read anywhere from 0 to -40. With where I live anything from -34 to -24 is fine with me.


2014 Nissan Versa Note 1.6 liter engine. 1997 Ford F150 4x4 4.6 liter engine.

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