Ok to run without radiator overflow temporarily?

[MrDude_1]

Originally Posted by cochino12

Other than maybe leaking a bit of coolant is there a problem with running without an overfow reservoir for a few days?

nope.
just be sure to check your water level every morning. each time your engine warms up, the coolant expands, and a little is pushed out, but then when it cools off, its sucking air back into the system.. it wont harm it, but it just loses coolant.