Just like the engine oil, the coolant has to be replaced periodically, as it will catch dirt, rust, rubber buts or other deposits which will damage the water pump at some point. Correctly replacing ...

Coolant is an essential liquid for internal combustion engines, but it doesn't last forever. Here's how long an open bottle will remain fresh.

Answer. A seven-year-old bike with only 1,200 miles on it probably sat around unridden for long enough that the previous owner decided a coolant flush was a good idea (and it was) before listing the ...