JPR also had a great post on coolant somewhere...
From what I know, it's OE or G-05, but just yesterday saw a BMW coolant bottle posted here that had a typo...said Volvo in one instruction and BMW in another...so some Volvo coolant would work too, I suppose.
It should be a $25 investment every few years. I have to do mine...will plan on it in the spring when I put in a new WP just to be safe(r).
Upcoming comedy shows: May 20, Greenwich Village Comedy Club. 6 p.m. See Facebook for other shows and PM me if you can make one...love to see you there!
A recent set: https://youtu.be/995gLmVEVZk
Mangofy your E46!