Noticed today my coolant was quite now so as I looked closer around the nipple area the hose had coolant coming out of it, but not really leaking just bubbling. Just not sure if the bubbling would cause the coolant to evaporate or cause it to leak out slowly maybe? But I took the hose as it did not seem as it was pushed in all the way and made it go tighter in the nipple and filled the resovier, now hopefully the coolant will not disappear again. I know these bottles tend to crack easily, but besides the nipple area do they break anywhere else that cause mysterious coolant to be lost?