I have an 04 TL 6MT with 115k. Timing belt service done already. I noticed the past couple days my first gear hasn't been picking as fast as normal. Is this the clutch going bad or something more simple?

 

maybe heatsoak ....

 

Can using different coolant cause this? Reason I ask is because my I topped off mine with Prestone

 

before we can diagnose it, we need more details from you.

simply saying, it doesnt feel the same isnt an adequate description.

Why doesnt it feel the same?
are there any noises present?
on cold start ups, does 1st gear feel the same than when you've already warmed up the car?

stuff like that

 

It is accelerating alot slower than usual.
No noises are present.
The car feels the same warm or cold. Doesn't accelerate as fast

 

Heat heat heat

 

if the problems displays while COLD, then its not heat soak.

this is why its imperative to give good details explaining your problems.

 

Sorry about that

 

did it start right after the timing belt change?

or when did you start noticing it?

 

Your clutch isn't slipping, correct?

 

this happen to mean when it was 105 last week in nyc after that i didnt do it nomore so it was the heat for me

 

I just started noticing it when this 80+ degree weather started

It isn't at all

I think it possibly could be the heat but I wasn't sure if it was something else