Anyone know the details about this coolant?
G12 used in VWs
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My '96 Audi A4 was one of the last Audi or VW to come with the green G11. I switched a few months after I got the car to G12, which is reddish, and I have never looked back. G12 has since been supplemented by G12 Plus, which is purple. Unlike G12, G12 Plus may be mixed with G11 and G12.
99,
I don't know the details about this coolant, but here is a picture of the back of the jug. I use the stuff in my '00 GTI.
It's made from 24k liquified gold.......honest. That's what the VW parts guy told me when I choked at the price tag.
I don't know the details about this coolant, but here is a picture of the back of the jug. I use the stuff in my '00 GTI.
It's made from 24k liquified gold.......honest. That's what the VW parts guy told me when I choked at the price tag.
I've read somewhere in ClubB5 that G12(silicate/phosphate free formula) is close to Dexcool of GM..dunno but regardless I always use the oem stuff. I use the Autobahn brand for the B5, part# ZVW 231 G12..$10 from the stealership.
If the warranty runs out, I'll run Water Wetter in the B5..it keeps the 190E kewl.
If the warranty runs out, I'll run Water Wetter in the B5..it keeps the 190E kewl.
Ethylene glycol*, OAT, no silicates, no phosphtes - sure reads like a DEX-COOL lookalike - regardless of marker dye color... Thanks for posting the readable digital photo.
*Diethylene glycol is a co-product of the synthesis process for ethylene glycol. It forms to about 2% of the overall glycol concentration and has little or no impact on the antifreeze/antiboil properties.
"Alabamistan" - which part, wayne, the larger area known as the Democratic Peoples Republic of Albamistan By Dang, or the tiny free principality known as Inner Outer-Alabamistan?
*Diethylene glycol is a co-product of the synthesis process for ethylene glycol. It forms to about 2% of the overall glycol concentration and has little or no impact on the antifreeze/antiboil properties.
"Alabamistan" - which part, wayne, the larger area known as the Democratic Peoples Republic of Albamistan By Dang, or the tiny free principality known as Inner Outer-Alabamistan?
G-12 coolant is what BASF calls Glysantin G-30. BASF, which is OEM to many European manufacturers, makes three related coolants:
G 30 - New generation of coolants for VW and Audi
G 33 - Approved by Peugeot, Citroen
G 34 - Approved by Opel/GM Europe, Saab (DexCool in the U.S.)
Chemically they're nearly identical - they're nitrite-free, amine-free, phosphate-free, silicate-free, borate-free OAT coolants.
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=37;t=000161
DexCool is basically interchangeable with the G-12 coolant.
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G 30 - New generation of coolants for VW and Audi
G 33 - Approved by Peugeot, Citroen
G 34 - Approved by Opel/GM Europe, Saab (DexCool in the U.S.)
Chemically they're nearly identical - they're nitrite-free, amine-free, phosphate-free, silicate-free, borate-free OAT coolants.
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=37;t=000161
DexCool is basically interchangeable with the G-12 coolant.
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Ray H wrote: "Alabamistan" - which part, wayne, the larger area known as the Democratic Peoples Republic of Albamistan By Dang, or the tiny free principality known as Inner Outer-Alabamistan?
Ray H, that's quite funny!
But I don't really know how to answer.
Ray H, that's quite funny!
Mickey_M,
A local reputable independent VW repair shop owner told me that G12 would NOT mix with Dexcool. He said if you poured equal amounts into a container that the two would seperate.
I know nothing about coolant chemistry, so I have no idea if what he said is true. Maybe he was just blowing hot air.
A local reputable independent VW repair shop owner told me that G12 would NOT mix with Dexcool. He said if you poured equal amounts into a container that the two would seperate.
I know nothing about coolant chemistry, so I have no idea if what he said is true. Maybe he was just blowing hot air.
G12 and DexCool are the same basic chemistry.
I had a half and half at an Irish pub last night, half Guiness and half a dark brew.
If you pour the dark brew slowly onto the Guiness, it stays separated while you drink it.
Guiness and the dark brew, however, are fully compatible.
I can confirm that this morning when I drained them they were fully mixed and indistinguishable.
Pay no attention to the VW repair shop.
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I had a half and half at an Irish pub last night, half Guiness and half a dark brew.
If you pour the dark brew slowly onto the Guiness, it stays separated while you drink it.
Guiness and the dark brew, however, are fully compatible.
I can confirm that this morning when I drained them they were fully mixed and indistinguishable.
Pay no attention to the VW repair shop.
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Are all the brand name Dexcool coolants the same formulation?
The "DEX-COOL" name is a GM trademark property and refers to specific performance capabilities, not a specific formulation. One of the performance requirements is that each company's licensed "DEX-COOL" must be compatible as compatible for service fill and top-up with other brands identified as "DEX-COOL". GM's own DEX-COOL sold through GM dealerships is made for them by Texaco division of Chevron Oil Company. Though the jugs are different, the contents are identical to Texaco "DEX-COOL" sold through national autoparts and discount stores.
My position is that a flush and fill of $5 Supertech Generic Dex is better than topping off/mixing G-12 and Dexcool. People who are topping one coolant with another are probally overdue for service and simply running it too long. Also, a leaking system that allows air to mix with G-12/Dex is a known problem as far as IT jelling. Low level from leaks>mixing of air into system>topping with Dex>shot cooling system. See the cycle? Nothing to do with them being compatible.
I am just here saying dump G-12 and any unsilicated coolant. In addition to what I wrote below, you all know how long our Audi radiators last, I don't see the same failure rate on Mercedes at my BOSCH Center.
Unsilicated coolants that rely on slow-acting OATs are history, GM and Ford dropped them as well as VW. Lightly silicated Hybrid Organic Acid Technology coolants like Mercedes G-05 have the ability to protect more rapidly in situations where the protective layer has failed due to cavatation, etc. G-05 H/OAT coolant has the longest sucessfull track record, btw. Mercedes' even carries a sack of silicated crystals in the coolant resevior to replenish the silicates. I don't make this stuff up. My theory, after seeing pics in MOTOR Magazine of fully corroded OAT water pumps in controlled tests, is that there are a lot of blown timing belts from water pumps siezed by G-12. There is also the issue of the plasticiser 2-EDTA in G-12 eating through seams and gaskets."
G-12 is obsolete, replaced by G-12 Plus.
[ December 14, 2005, 01:25 AM: Message edited by: Audi Junkie ]
I am just here saying dump G-12 and any unsilicated coolant. In addition to what I wrote below, you all know how long our Audi radiators last, I don't see the same failure rate on Mercedes at my BOSCH Center.
Unsilicated coolants that rely on slow-acting OATs are history, GM and Ford dropped them as well as VW. Lightly silicated Hybrid Organic Acid Technology coolants like Mercedes G-05 have the ability to protect more rapidly in situations where the protective layer has failed due to cavatation, etc. G-05 H/OAT coolant has the longest sucessfull track record, btw. Mercedes' even carries a sack of silicated crystals in the coolant resevior to replenish the silicates. I don't make this stuff up. My theory, after seeing pics in MOTOR Magazine of fully corroded OAT water pumps in controlled tests, is that there are a lot of blown timing belts from water pumps siezed by G-12. There is also the issue of the plasticiser 2-EDTA in G-12 eating through seams and gaskets."
G-12 is obsolete, replaced by G-12 Plus.
[ December 14, 2005, 01:25 AM: Message edited by: Audi Junkie ]
Audi Junkie,
Do you know something I don't know? When did GM quit using Dexcool?
Do you know something I don't know? When did GM quit using Dexcool?
"G-12 is obsolete, replaced by G-12 Plus."
The part number seems to indicate a version change. BASF still lists the G 12 (BASF's G 30) alone.
My German is rusty but the German sources I scanned seemed to indicate that G 12 Plus is basically the same as G 12 with a slight change to permit mixing with G 11.
As you may know if you mixed G 12 with G 11 it foamed.
That would allow a dealer to stock one coolant and to back fit G 11 equipped cars without the extensive flushing required with G 12.
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The part number seems to indicate a version change. BASF still lists the G 12 (BASF's G 30) alone.
My German is rusty but the German sources I scanned seemed to indicate that G 12 Plus is basically the same as G 12 with a slight change to permit mixing with G 11.
As you may know if you mixed G 12 with G 11 it foamed.
That would allow a dealer to stock one coolant and to back fit G 11 equipped cars without the extensive flushing required with G 12.
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"Unsilicated coolants that rely on slow-acting OATs are history ...."
Peugot/Citroen, GM, and VW/Audi/SEAT are still using them.
Overall I believe the G 05 Mercedes-type coolant has some real advantages, but in a properly maintained cooling system the OATs can work just fine.
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Peugot/Citroen, GM, and VW/Audi/SEAT are still using them.
Overall I believe the G 05 Mercedes-type coolant has some real advantages, but in a properly maintained cooling system the OATs can work just fine.
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