A mix of 50% clean water and 50% straight antifreeze will protect down to -34 degrees F. You should have what is in the system tested to see where you are protected to. Your local auto parts store can sell you a coolant tester for cheap.
Wally World.
Best way to find products for cheap is through Google Product Search. Here is a few sites that sell these. http://www.kvmtools.com/product_info.php?products_id=6580&osCsid=cdd41b815c2a03433a27d4d36c426677 http://secure2.data-comm.com/servlet/RBIS/-strse-112475/Tester-Pressure/Detail http://store03.prostores.com/servlet/dce2/the-80851/ASHCROFT-1305D10-Tester-Pressure/Detail
It not an expensive part.. cheap enough to replace if you suspect a problem. But if you must check it, you can hook it up to a 12V battery and get any off the shelf pressure tester.
Yes, as long as you are using the correct coolant as recommended by the vehicle manufacture.
get a mineral tester and find it cheap. some rip you off
Well this will make you mad....look on the radiator cap for the psi allowed in the cooling system....if it exceeds that then more than likely you have a blown head gasket. Check your oil to see if it's milky and are you using coolant? If So these are tatle tales signes of a bad head gasket. You can rent a cooling system tester from autozone to see if it is a blown head gasket also......not cheap to fix if so.
I don't recommend any of those products, they tend to create clogs or reduce efficiency. Just have the leak fixed since it's usually pretty cheap to have done.
There are many different types from key chains to portable breath alcohol tester, ranging in price from a little under $20 to over $100. Also, please remember that any alcohol breath tester you buy may not be accurate, NEVER drink and drive.
good, cheap, efficient and available almost anywhere
if it's a bad leak, look with a trouble light. start on the floor, then go straight up from there. try to trace it to the source. otherwise, mechanics use a pressure tester to pump up the system while engine is cool. not exactly a cheap tool and some work far better than others. ( i have one and it's a piece of crap compared to others I've used) don't forget to check the floor under your dash in case your heater core is leaking. if you never see any leaks but you keep having to add coolant, the coolant is going inside your engine, either getting burned with the fuel or it's in the oil. but boy i hope not. check the oil, doesn't look like a chocolate shake does it? as far as fixing, it depends on what's leaking.
the Samsung HT-D550 is a good cheap system.