Nissan 370Z Forum - View Single Post

kannibul · 02-13-2010, 04:57 PM

I have a Honda Civic, and it has a 12 quart system.

I drained and refilled 3 quarts of ATF today.

I plan on doing another drain and refill next weekend since I over-filled by probably 1/2-1/3qt.

So, here goes:

Since the old fluid and the new fluid will mingle, that means I have 75% old fluid swimming in my transmission.

Now I take another 25% from that, by drain and refill.

So, I could assume that I need to do 12 - 25% - 25%?

If so, then that means I have 6.75:5.25 old:new = 56.25% old fluid?

Then if I does it once again, that'd be 12 -25% -25% -25% = 5.0625:6.9375 old:new = 42.1875% old fluid?

Am I on the right track?

Thanks!

02-13-2010, 04:57 PM	#1 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 267	AT drain and refill...percentages? I have a Honda Civic, and it has a 12 quart system. I drained and refilled 3 quarts of ATF today. I plan on doing another drain and refill next weekend since I over-filled by probably 1/2-1/3qt. So, here goes: Since the old fluid and the new fluid will mingle, that means I have 75% old fluid swimming in my transmission. Now I take another 25% from that, by drain and refill. So, I could assume that I need to do 12 - 25% - 25%? If so, then that means I have 6.75:5.25 old:new = 56.25% old fluid? Then if I does it once again, that'd be 12 -25% -25% -25% = 5.0625:6.9375 old:new = 42.1875% old fluid? Am I on the right track? Thanks!