Re: Best antifreeze to use? (92VdubSLC)
I don't know about on your engine, but I imagine it's the same...
VW recommends something (the G12 you are talking about, I guess). I believe the important part is that it is phosphate free, (you can find phosphate free antifreeze at the local parts store, more than likely). I have seen the aluminum parts of an engine (mostly the outlet flanges / oil cooler, etc) disintegrate so badly that there were actually holes in it. From what I'm told it' because the coolant wasn't the phosphate free type. (Who knows, though - maybe the previous owner put brake fluid in the coolant accidentally, or maybe a blown head gasket contributed hot reactive gasses to the coolant. I can't say for sure)
But, VW is pretty clear about recommending it, so that's what I use even though it costs a bit more.