So I have seen it said to change your fluid every 6 months and I have also seen once a year. Which do you guys recommend?
 
Also, how long is just too long to leave it in? I often travel for work for long period of a month or 2. Would this be an issue? Say it was recommended to change every 6 months, I know I will be leaving around the 5 month mark for the fluid being in the system. Lets say Ill be gone 2 months, putting me 1 month over the recommended fluid change. It that short amount of time enough for something to run rampant through my system and cause me issues? Would it be better to go ahead and change the fluid at the 5 month mark vs the 7 months? Just wondering because, for example, youre supposed to change the oil in your vehicle every 3,000 miles.....but who amoung us actually does exactly that? Just wondering if those fluid changes are more of a hard set date and highly recommended to not go over, or if I can let it slip a little bit. 
 
 
For reference, I plan to use EKWB premixed coolant, not just distilled water with additives. 

thanks, I have already bought my coolant and I got all my parts in today for the loop. Im chomping at the bit to build the loop tomorrow. I will probably switch to that fluid after the first change though. It would make life so much simplier in the future.