CTDieselHead
Veteran Member
- Joined
- Jul 11, 2004
- Location
- Naugatuck Connecticut, USA
- TDI
- 99.5 Jetta, Silver / 2010 Sportwagon, White
My heater core has a slight leak which I can smell but see no noticible loss of coolant. I just assumed that I would replace the heater core but have learned what a big job that is. Bar's Leaks brand of radiator stop leak claims to be compatible with OAT/HOAT extended life antifreeze. Are there any problems with trying that first?