Recommended Coolant for DX engine - G12++

Hi guys, quick question. What’s the most cost effective coolant for my DX engine in my campervan?

I fresh filled with G12++ I think about 5 years ago before moving abroad where it was sat on my drive in the UK. I assume it needs replacing ?

The G12++ I got before was pretty pricey for the large amount needed for a campervan (19 L total capacity)  so wondered what’s a good non VW one to go for?

Thanks

I don't use G13 in my old golf but it's in my wife's Touran and I don't think you need to replace G13 as I don't think it "goes off" over time?

mark1gls said

I don't use G13 in my old golf but it's in my wife's Touran and I don't think you need to replace G13 as I don't think it "goes off" over time?

Sorry I double checked order history and it was G12++ which I am sure is 5 years life. Is this same if vehicle is unused?

g11, g12, g12+,++,++++++++, G13 etc all ok to use. you can get febi brand for all of the above from vwspares.co.uk