SO I was in the process of running antifreeze through my motor. After all was said and done I was reading the back of the bottle and it said do not use in marine engines. It was an artic ban antifreeze with a burst protection of -50. What is the reason of not using it in my motor? just because it does not have the rust aid or anything like that? Also would it just be because their product gells up? any input would be great. Thanks!!