hey guys so my coolant is disappearing I fill it up to the max line and about 2-3 weeks later its at the minimum line. keep in mind where I am its like 90degrees everyday... there is also not a drop on my driveway or anything under the car...so iv done some research and it says it could be leaking internally? or it could be a shitty reservoir cap? if its leaking internally wouldn't my temps be off or my cylinder corrections? everything is normal iv just had my car tuned by adam and everything looked normal to him to power is fine to...also would it be leaking at this rate if its internal issue or more or less? I'm looking for some knowledgable input pls, has anyone else had this issue? I'm pretty concerned...I just wqanna drive my damn car and not have to be worried about problems or issues lol. thanks in advance