So a couple of weeks ago, my truck started making this short "pew" noise directly after it starts when the engine is cold. Only last like a second and it happens just as soon as I release the key from starting. Seems to be worse if its colder outside but will even do it when its above 60F. Once the truck has been driven and reached operating temp, it will not make the noise when you start it again. the truck pretty much needs to sit for a day and completely cool to make the noise. The truck starts just fine, runs and idles just fine. I have an Insight CTS and all temps and pressures are the same as they always have been. The truck is up to date with all maintenance. I have realized though that the noise started directly after an oil change! I changed my oil on the 5th and I first heard the noise on the 9th and its very possible that I didn't drive any between those days. Changed oil with 10qts of Rotella 5w40 and a Mobil 1 filter, same as always. The only thing I did different was I changed out my factory oil drain plug with a PPE magnetic plug. Feel like this shouldn't be related but its the only thing "different" I did during the oil change. Please see link for video of noise.