Radiator losing water level

[Tones67]

Help and or advise needed.

Looks like my radiator in my 67 mustang convertible is losing its water. There is no apparent leak and it has not overheated. Admittedly I haven't taken it for a long drive but it does seem weird. At times it needs 1 to 2 litres after small trips here and there. Is this normal or am I looking at a bigger problem headed my way ??

Rgds

[IGALOP]

Normal! My 67 radiator is something like 20-30mm down from the neck level when cool. It took me a few months to trust it and not fill it up to the cap, every trip I took it on.

[66 Hertz]

Level should be just above the core not filled up to the top.

[66RedRagtop]

Other than not topping up to the brim (to allow for expansion), here's a start -

Might just need a new radiator cap.
Make sure there's no coolant in the oil - check dipstick - oil looks like mayonnaise.
Could need a radiator back flush - crap sitting on core - top tank banks up and tosses it out the overflow.
Core tubes might be scaled up. Same result as above. Top tank has to come off and the core rodded out.

[ponyride]

If there's no evidence of coolant in the oil or leaking anywhere, then as Igalop suggested it's more than likely because it's overfull, many of us have been there.

Does the coolant come out of the overflow hose? If so, and it's not overheating then that's what the problem is. If you're still worried about it, perhaps fit an expansion tank?

[nickd]

most radiator workshops would be happy to test your cap and pressure test your radiator to check for leaks.

[GLENN 70]

A radiator will find its own level ,a good inch, 25 mm down. If there are no leaks it should stay there but keep an eye on it .

[Tones67]

thanks guys appreciate the feedback. I'll go through all the tests