I have a Montana 2000 which I bought at an auction a year ago. I notice I was low on coolant in the reservoir. Then I opened the rad cap and it is full, but it has some kind of chunks floating in the coolant. There is a warning on the reservoir not to fill it with just any type of coolant. Can I add a bit or regular green/ yellow coolant or even some water? Any reason why I would want to flush the system. I have been told that the chucks could mean the rad had a leak before and sealer was added to seal the leak. Also the coolant really stinks, a real bad smell to it. Any advise. Should I add any coolant at all? There still is a little bit of coolant in the reservoir. And as far as I can tell, the van has never over heated before.
lbbs