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LMC Truck

Username Post: Testing Dex-cool        (Topic#176048)
Posts: 143

Reg: 02-25-07
12-01-07 08:11 AM - Post#1308302    

Can you test Dex-cool with a standard Antifreeze tester? I mean the kind with the turkey baster bulb on the top and the arrow that floats to the protection temperature. I know its just a density tester and wasn't sure if Dex-cool has the same density as other anti-freeze. The tester says "Tests All (ethylene glycol) Antifreeze".

Please lets not start a thread about the virtues of Dex-cool (a.k.a. Red Death), etc. Just trying to learn how to work with it.

LMC Trucks
"9th Year" Silver Supporting Member
Posts: 9045
Age: 72
Loc: Venice, FL
Reg: 01-05-02
12-01-07 09:42 AM - Post#1308344    
    In response to DenaliXL

I would say use the tester, Specific Gravity of Dex is 1.13, Green stuff is 1.12.

82 Monte Carlo SC, 355 w/Vortec heads, roller rockers, 670 Street Avenger, Pypes TRUE DUALS.
2000 Sub.5.3L 40 Gallons of gas @ $1.97/gal. bla bla bla.

Senior Member
Posts: 8136

Reg: 06-30-00
12-01-07 09:43 AM - Post#1308345    
    In response to DenaliXL

I also test electrically:

It's what anodes are for:

Edited by Mike on 12-01-07 09:57 AM. Reason for edit: No reason given.

Posts: 143

Reg: 02-25-07
12-01-07 09:48 AM - Post#1308346    
    In response to Mike

  • Quote:
Specific Gravity of Dex is 1.13, Green stuff is 1.12.

Thanks. That's exactly what I wanted to know!

Posts: 143

Reg: 02-25-07
12-01-07 09:51 AM - Post#1308348    
    In response to DenaliXL

  • Quote:


Very Senior Member
Posts: 1726
Loc: Northern California
Reg: 07-05-02
12-01-07 11:06 AM - Post#1308383    
    In response to DenaliXL

I have tried Prestones Ethylene Glycol (sp?) float guage on the dex-coolant and it didn't work. I dont know if it was a bad gauge or the coolant isn't compatible with the guage.

Prestone says to use the test strips to test thier Dex-Cool coolant. I think test strips are also needed for Propylene Glycol coolants.

2001 GMC Sierra K1500 Z71 x/cab SLT 5.3L

Dedicated Enthusiast
Posts: 5143
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
12-01-07 04:32 PM - Post#1308589    
    In response to Squasher

Yes for PG coolants, I happen to have some of those test strips because I have it (Amsoil PG) in my 93 Lumina winter car.

btw-The test strips have an expiration date so be careful of what you buy.

2009 Cadillac CTS4 AWD Performance Sedan
2015 GMC Sierra Denali 6.2L Crew Cab Standard Box 4WD

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