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07-09-2014
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#1 |
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Join Date: Feb 2004
Location: Ma
Posts: 404
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Anti freeze
Just wondering what everyone is using. I know that dex cool is a disaster. I just changed it over the weekend with napa green. It says it meets GM 1825 M but it also says it's low silicate and safe for "all" systems. That has me a little worried as I remember something about the "safe for all systems" stuff being a potential problem too. Does anyone have any suggestions? I don't want to destroy my head gaskets.
TIA, Michael
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1990 ZR1 #2574 Medium Quasar Blue Metallic 1 of 19 |
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07-09-2014
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#2 |
   
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Anti freeze
Plain ole green stuff nothing fancy
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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07-09-2014
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#3 |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
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Re: Anti freeze
Zerex original formula, GM 95 & older, from Napa
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07-10-2014
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#4 |
 Join Date: Jul 2013
Location: Atlanta
Posts: 451
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Re: Anti freeze
I use the green stuff from Napa, mixed my own 50/50 plus a little water wetter, full drain and flush when I did the water pump. 95 degrees in traffic and it's just fine.
Funny how different groups have different opinions. In the 928 crowd (similar aluminum OHC engine), Dexcool is the ONLY thing they will use and if you put the green stuff in you will be shunned. I used it for years in a couple different 928s, 944s and other cars, and had no issues whatsoever. But when I did the water pump and hoses in the Z, I took everyone's advice here and went green. Whatever works.
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Mark '90 ZR-1 #1322 Daily Driver, 64k and counting Black/Gray [IMG]http://i208.photobucket.com/albums/bb49/mlitherland/IMG_0326_zps3d50d8cb.jpg[/IMG] |
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07-10-2014
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#5 |
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Join Date: Feb 2004
Location: Ma
Posts: 404
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Re: Anti freeze
Thanks guys. The stuff from napa is green and says it meets 1825 M spec so it's probably fine. The fact that it said low silicate formula made me a little nervous. I just learned the actual 1825M is still available from GM. I think I'll order a case of that.
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1990 ZR1 #2574 Medium Quasar Blue Metallic 1 of 19 |
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Linear Mode
