| I am thinking about changing the coolant in my 95 740i. I have read some things about the strict specifications that BMWs have for coolant, but I was wondering if anybody has ever actually had an experience with using non BMW specific coolant and if that was alright.
My girlfriend bought some Prestone coolant (Dex-Cool), and it is supposedly really good. It certainly was expensive - $11 at pepboys. I was wondering if anybody has ever used that and if so, is it alright.
Also I would like to drain the coolant out first, is there a good guide somewhere that can direct me in how to do this. I am no car expert, but I think I am decently smart. Thanks for the help guys. | 
