View Full Version : coolant concern
Ray1031
11-14-2018, 05:40 PM
To the experts out there, my son replaced his turbo yesterday, at 10PM he calls me to let me know he forgot the antifreeze at home. He was 40 miles away at a friends used car lot. Because of the time he couldn't find G12 and purged and filled the system with Valvoline G5. Should we do a complete flush and fill it with G12. Container says its good to be used with BMW, VW/Audi and Benz....
VinnysS4
11-14-2018, 05:53 PM
Is it the proper coolant? No. Will it Blow the motor? No. If you mix the two coolants will it cause sludge build-up? Yes.
The reason why they recommend to use the G 12 or G13 coolant is because of the lack of minerals inside it that can cause pitting and corrosion on the aluminum bits inside the engine. If the cooling system was a hundred percent flushed and different coolant was installed, I wouldn't worry too much about it. If any coolant was left though, I would definitely make sure to drain it out flush the system and replace it with the proper coolant. I have personally run green coolant in an Audi before and I wasn't too worried about it. As long as you completely flush it and make sure to use distilled water which also lacks the minerals in it, you should be just fine.
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WhiteTrashB7
11-14-2018, 06:57 PM
Agreed [emoji817]
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Jet08
11-14-2018, 07:01 PM
That is why if you are unsure about which coolant is in the system you should only top up with distilled water, different coolants do not mix well and react differently.
Hugh@EuropaParts
11-15-2018, 06:34 AM
That is why if you are unsure about which coolant is in the system you should only top up with distilled water, different coolants do not mix well and react differently.
this... unless it's freezing out lol.
Ray1031
11-15-2018, 04:57 PM
That night was supposed to get in the 20s in South Texas...didn't want to risk it...
Willënskraft
11-17-2018, 10:24 AM
Just in case.
https://www.ecstuning.com/groupheaders/img/Coolant_Cooling_G12_G12_plus_G13_Antifreeze_Purple _Pink_Pentosin_Vaico_Organic_Acid_Technology_OAT_H OAT_Hybrid_Silicates_Phosphates_VW_Volkswagen_Audi _A3_Allroad_A4_RS4_S4_A5_S5_A6_S6_A8_S8_Q5_Q7_R8_R S6_TT_CC_EOS_Golf_MKIII_MKIV_MKV_MKVI_Jetta.jpg
*Pic for reference