Do you recommend dropping the transmission pan if you've never done it before? And, how do you clean it?
oO Khanh Oo,
Are you planning on doing this procedure yourself of take it to a mechanic/stealership to get done?
There are a few approaches.
(1) Drain and fill run it for a month and then drain and fill again.
(2) Drain the fluid, remove the pan and filter/strainer and then clean the pan and add new fluid.
Then repeat the process in 12 months time.
(3) Pay someone to do a flush and not clean the pan and replace the strainer.
How long do you plan on keeping the car?
I think the pan and stainer should be cleaned. I'm sure there is a lot of buildup on the tranny pan. In your case I think I would do a drain and fill first and then do another drain and fill 30-60 days later but this time after the drain, I would drop the pan an change the strainer and gasket and then refill with fresh fluid.