I use what the manual instructs me to put in if forgot whats it called it might be dexcol by prestone? it doesn't do it all the time but sometimes on cold mornings for about 15sec then it goes away to normal
Have you had any issues with overheating recently? It sounds like you may have a bad head gasket. You may need to consider doing a block test for combustion gas in the coolant. You can rent the kit from NAPA and probably about $10.00 for the fluid. If the fluid turns from blue to yellow or green it is a definitive confirmation of a failed head gasket, if it doesn't, you MAY be okay, there have been false negatives with early stage gasket failure that when repeated later are positive. I tried to find the instructional video for the test on the site but was unsuccessful, maybe someone will know or you can check youtube.com, they may have one.
EDIT: Ranger posted while I was looking for info on block test, sorry for dual posting the question.
The car doesn't overheat at all but I do see some fluid around the fans a little by the radiator but no overheating and no smell of radiator fluid I do think it's time for a tune up it only happens on cld mornings for about 10-15sec then back to normal?
Unless coolant is getting into the cylinders and causing a misfire condition. This kind of misfire does not usually cause P0300 or blinking SES light.
Not trying to scare you, but there are so many possibilities. Start with the cheapest diagnostics (block test) to rule out HG's. If it turns out okay, then you can change plugs (AC Delco #41-987) and see if it helps.
Any smoke from exhaust? If so, any smell to it? (NOTE: cold morning steam is fine.)
Head gasket smoke: (This was when my car had misfire due to coolant in the cylinders)