Hey Guys, I am doing a full service on my 1996 Legacy L wagon. My questions pretains to the automatic transmission. Most of my vehicles to date have been manual transmissions. This is my first auto trans service. I have read the procedure and its as simple as it gets, pull the plug, drain, add fresh. From what I gather it should take about 4 quarts to fill with just draining the pan and not messing with the torque converter.
My question is this: What fluid should I put in there? Stick with cheap fluid or go to something sythetic or "performance". The car has 132,000 miles on it. I purchased from the original owner but have no service paper work. I have put 45,000 on it since I bought it and have not done anything but oil changes untill just recently. I drained both front and rear diffs today and the fluid looked excellent and was not dirty or tinted at all. So, maybe the trans has been serviced as well???
But, either way. I want to start fresh. What is the best method here? What fluid to you recommend? Should I drain and add, then drive for a week and drain and add again to try and cycle as much old fluid out as possible. Should I consider pulling the pan and replaceing the filter screen while its on the lift?
To make this longer than necissary post longer. - The condition of this trans is basically good. It shifts a little hard at times but nothing anoying or concerning. the only thing it does do that stands out is this: At idle while stopped in gear the car will shutter when at a stop light. It shudders pretty damn hard. I own three subarus total and this is not the normal boxer rumble. It is not related to the CV axles like some will likely say. This is different. And when the trans is placed in neutral the shudder goes away completely. Place back in gear and its right back again. The shudder is significant. Been doing this since I bought it. It has not improved or become worse over 45,000 miles. Any ideas?
Edited by tedbull, 07 May 2014 - 06:29 PM.