well it all depends on you. check it every time you do a oil change.every 3,000 miles look at the overfill tank. but it should last for as long you own the car. and if you want to make shore it does last, give it a radiator flush.
The radiators hoses lasts for about 100000 miles. It is however important to regularly check the radiator hose before these miles are reached.
If you change the coolant as recommended in your owner's manual and use the proper coolant mixed 50/50 with distilled water the radiator can last the life of the car. Neglect this service and it may only last 10 years or less.
It should outlast the car. Sometimes, there's a gasket on the underside that can go bad after a decade or so.
You can get about ten to fifteen years on your radiator before you would have to change it. You are going to need to flush your coolant about every 60,000 miles to ensure that your radiator stays good and does not get clogged.
No. You can use the old one as long as it fits securely.
In Short, No. In Long, No, it goes into the core support which also is where the radiator mounts into.
It depends on the type. The old green was good for 3 years. There also 5, 10, and 15 year coolants in use.
Last I heard, there was no such thing as radiator sealant in a commanche. If you have a hole, you need a new radiator. Try tightning down all the hoses first, though.
No real way of knowing for sure. I've seen them last for the reasonable lifespan of the vehicle, and I've seen them fail in a substantially shorter period of time. Lots of factors go into this, and there isn't a concrete answer to give here.
As long as it takes times the hourly rate of whomever is doing it.
As long as you can keep adding coolant to it.
it will fit if you want it to. my buddy had a crx si with ls vtech and a Chevy radiator. and i have a 86 crx and just put a prelude radiator in it last night