Which coolant to use!

[MattCVW]

Hi, I have a 64 plate MK7 VW Golf, 1.6 TDI. I recently put some G30 coolant in as it was running low, the recommended coolant is G13. Will this cause any issues?

Thanks.

[rottenegg]

It's pink and blue coolants you shouldn't mix, in VWs at least. It used to congeal into water way blocking clumps.

[trickywoo]

Coolant is a real mine field with contradictory information all over the place.

Prestone claims their coolant mixes with anything and I’ve not heard of anyone having any issues.

[rottenegg]

More specifically, G11 (blue) couldn't be mixed with G12 (pink). Not sure if the G11 equivalent stuff is still around.

[99hjhm]

With G11 G12 G12+ G12++ and now G13 it’s easy to get confused. G13 is purple. If it’s not reacted in the header tank you are ok.