So I brought Plastic oil pan kit and Dextron VI x6 to self serve garage to do the fluid changes.
I realized it has a metal pan (GM tranny) so I decided to just do the fluid.
I opened the Fill Plug first (about 20 minutes after driving a car for 40 min) The oil came out crazy. I didn't expect that much from the fill plug. and then I also opened the Drain plug. Good amount of oil came out as well.
The oil went straight into those big tank at the shop. So I didn't measure it.
I filled it through the Fill plug. At 3rd qt, oil started to come out.
I capped the plug, started the car, did some idling and shit through gears just like everyone talks about.
I reopened the plug and no oil was coming out. It started to come out again after I added just little more of oil.
I figured maybe lots of oil didn't come out since I didn't drop the oil pan.
I think I drained the oil more than 3qt just by guessing. But I couldn't just fill it while the oil overflows. I capped it when it was coming out in Thin stream.
And then, while driving home, I remembered the oil came out crazy (like drain plug from regular oil plug) from the Fill Plug
What did I do wrong??? Am I driving with 2 1/2 qt of oil in Tranny?