So i got my sr and manual swp 3 weeks ago everything works fine idles at 950 or 900 so it was all good. Now when you start the car it would always idle high at the start coz its cold which is normal. I needed to move my car into a garage so i drove it. On first gear and reverse while depressing the clutch theres these weird noises coming from the tranny and the shifter. TOB spinning? idk....It only happens when i drive it with high idle on first or reverse.
So yesterday i put a quart of oil 5w30! my mistake

after driving for 2 hours now my idle is 1k or 1100k. It goes down to 800 then stays at 1K. So what should i do? change oil? clean tps? adjust AAIV? and whats that weird noise? TOB? also my shifter is so hard to shift to 2nd gear.... i wonder whats up with that