OK, I ordered the Mobil ATF 3309 for my 07 2.4i. I am not sure which way I should change the fluid. I have read the DIY flush that involves unhooking the line above the tranny cover and draining two quarts from the cooler line via the clear hose, shutting it off and pouring the new into the return hose...process on swedespeed. My main question to this method is: Why not just put a funnel in the dipstick tube and fill it as it is draining from the cooler? If the return line just goes from the cover back into the pan it would be easier to put the funnel in the dipstick tube compared to the small return hose. Is my reasoning right or does the "return" line go back through the tranny a ways before it gets the fluid back to the pan? If so I am thinking on draining from the plug, reinstalling the plug filling up with __qts of new fluid to replace the drained, then drive around the block and repeating until all 12 qts of new are in. Does anyone know how many qts will actually drain from the drain plug doing this method? And last of all, which way will drain a higher % of the old fluid? Thanks for your input.....

 

That's the way I do it- with the funnel in the dipstick tube. I think it's the lower hose on the radiator that is the supply (under pressure) hose. I use A piece of 1/2 clear vinyl hose to a 5 gallon bucket. You have to shut the motor off because you can't keep up with the fluid pumping out. It usually takes about 3 sets of 4 quarts to get nice, clean fluid. As soon as the flow slows (about 3-4 quarts) shut the motor off and add fluid. You may want to get some extra clips for the line, they're delicate. If you shoot the hose with some wd40 the hose will come out of the radiator easier. The o-rings tend to stick.

 

Well my fluid arrived and I may finally have the time to do the flush tonight. I tried removing the air intake assembly to have easy access to the dipstick, but no such luck. I will try to remove the return hose and drain/fluch it into the bucket. If the clips give me a problem I will play it safe and do the drain plug refill method...