Antifreeze Pentosin or OEM Toyota

for choosing coolant, if just topping off, i use whatever's already inside. so if it's factory coolant, use Toyota OEM coolant.

Drain/refill every two years for me, Pentosin coolant only!

I personally use Pentosin SF for GM cars,it's not the cheapest,but it is one of the best. Made in Germany. Similar to Dex-cool but pink,no problems.

CRP the USA distributor for Pentosin; discusses, service intervals with the various long life VW coolants (g12, 13, etc): in their line Pentofrost SF, E, etc @ 14:00: Pentosin - Antifreeze Looks like Pentofrost E; the latest G13 equivalent is recommended for your car with crp's application guide; mixed @ 50/50 with deionized water

I personally just use pentosin. They're only about $13 for 1.5 liters ( here ) and makes 3 liters. I keep a few bottles and some distilled water in my garage just in case.

Gear Hell no! Don't use that generic auto parts store crap. Pentosin, VW/AUDI only. Unless you don't like your car!

You will probably be fine running the Peak stuff if you have to, but I seem to recall a few years ago I was able to purchase Pentosin/Pentofrost from Advance Auto Parts. That was a brand that I saw often on VW parts sites and it meets the standards for using it in the MKIV VW cooling systems, so I went with that.

Yes most certainly I always use Pentofrost/Pentosin VW-Specific Concentrated Coolants. Always have for every VW I have ever owned.

Yes, that will work. I did Pentofrost G13 equivalent for my top-up coolant.

The green does "work" but it wont help the health of the engine long term as there are chemicals in the Toyota red which help protect the engine, fittings, rad etc. Buy the right stuff from Toyota and it'll last ages, the wrong stuff will screw things up long term.