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| How to test Coolant http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=72975 |
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| Author: | racertracer [ Sun Dec 23, 2012 4:46 pm ] |
| Post subject: | How to test Coolant |
I know that the cheap floating balls will give me the freezing point, but what I want to test for is corrosion inhibitors. I read a post way back when that there is a way to test the coolant using a multi meter. Anybody have a clue? |
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| Author: | Hexus [ Sun Dec 23, 2012 5:58 pm ] |
| Post subject: | Re: How to test Coolant |
Found elsewhere: Check your coolant conductivity with a multimeter. 1. Start with cold engine 2. remove radiator cap 3. start motor 4. Set voltmeter to 'DC' (20 volts or less) 5. after reaching operating temp, insert positive (+) probe into coolant. 6. Rev engine to approx 2k and place probe onto negative (-) side of battery. 7. If the meter reads less than .4 volts your coolant is good. 8. readings above .4 volts the electrolisis additives are exhausted. |
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| Author: | tjkj2002 [ Sun Dec 23, 2012 8:01 pm ] |
| Post subject: | Re: How to test Coolant |
racertracer wrote: I know that the cheap floating balls will give me the freezing point, but what I want to test for is corrosion inhibitors. I read a post way back when that there is a way to test the coolant using a multi meter. Anybody have a clue? You can buy test strips at many auto parts stores. |
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| Author: | tjkj2002 [ Sun Dec 23, 2012 8:23 pm ] |
| Post subject: | Re: How to test Coolant |
Robinair,Fleetgaurd,Envirmental test systems,WIX,and many others have test strips sold under there names and most(if not all) can be had a parts stores.Should try a Napa or CarQuest. |
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| Author: | racertracer [ Sun Dec 23, 2012 8:24 pm ] |
| Post subject: | Re: How to test Coolant |
tjkj2002 wrote: racertracer wrote: I know that the cheap floating balls will give me the freezing point, but what I want to test for is corrosion inhibitors. I read a post way back when that there is a way to test the coolant using a multi meter. Anybody have a clue? You can buy test strips at many auto parts stores. Advance auto had them.... Coolant test strips. Thanks |
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| Author: | Auberon [ Mon Dec 24, 2012 12:50 pm ] |
| Post subject: | Re: How to test Coolant |
Using DVOM: 1 Put DVOM neg (-) probe on Negative terminal battery or GOOD ground. 2 Submerge DVOM (+) probe into coolant, in the overflow tank 3 Note voltage. 0.2 V (200mV) or less OK 0.3V to 0.6V borderline 0.7V or greater then FLUSH tHE SYSTEM etc. Do not measure resistance (Ohms). It is meaningless here. |
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| Author: | racertracer [ Mon Dec 24, 2012 5:42 pm ] |
| Post subject: | Re: How to test Coolant |
Auberon wrote: Using DVOM: 1 Put DVOM neg (-) probe on Negative terminal battery or GOOD ground. 2 Submerge DVOM (+) probe into coolant, in the overflow tank 3 Note voltage. 0.2 V (200mV) or less OK 0.3V to 0.6V borderline 0.7V or greater then FLUSH tHE SYSTEM etc. Do not measure resistance (Ohms). It is meaningless here. Thank you for the instructions. I just performed the test with a DVOM I bought from wally world and the reading was borderline at 3.2. |
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