I had the transmission oil and filter on my 2001 Accent changed at a garage last year. It just took 3 litre of SP3. My intention is to drive around a bit and then drain and refill. I understand that the oil will never be 100% changed but expect an improvement. Someone mentioned that a drain and refill will accomplish nothing because the new fluid will remain in the pan.
I have 2 questions.
Is a drain and refill of ATF on 2001 Accent possible without removal of the pan?
Will a drain and refill of ATF do any good? (20,000 km since last oil and filter change)