DIY'ing 7A trans fluid, need advice!

AstatenateZ

Also @QTR can you tell me if it pumps in easily? Like if I have a fitting that goes up into the filler hole will it flow back out and down and make a mess? Or if I can get a decent seal will it go up and over the block off area and into the trans pan fairly easily?

AstatenateZ

Well from start to finish (with a pizza & drink break) and letting car cool off on jack stands for nearly an hour, I got it done in about 2 hours. I drained old fluids from filler hole then drain plug while at 110-120 degrees , I got about 3.7 qt out. I put in 4 quarts my initial run. I put the car in each gear waiting 5-10 seconds while in each one, I put the car in drive for 2-3 mins and just let the wheels turn and then went thru each of the 7 gears while on jack stands by applying brake for resistance. , drained (looked a lot better when it drained out this time) and did this Process again, I added about 5 quarts (1-1.5 too much to ensure I had enough) measure pan temp in 3-4 spots and I was between 95-105 degrees. Let excess pour out til it dripped and tightened all bolts on pan. Took it for a drive. And feels much smoother and no slips , noises or lights. Thanks everyone for the good advice and tips!

jchammond

What did the fluid look like on first drain?


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MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

AstatenateZ

Not as black as coffee but def not red. It was pretty dark brown, second time it was a very lightly brown mostly red and looked a lot better! Shifts feel smoother, & more responsive when using paddle shifters.

jchammond

Agree with shift improvement,,,like giving it a tune-Up!
Though my fluid was dark-it didn’t smell burnt & every time I did the 4qt. Drain/fill afterwards,,,I would get the same feeling.
Just pick you out an interval that works for you,,,as these tranny’s do like clean fluid.
Next Z will get a cooler up front beside the oil cooler.
Now you see it wasn’t hard at all...(Pie-Job)

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

AstatenateZ

Yeah I’m a DIY’er and like the feeling of doing it myself. Only reason I even considered Nissan doing it cause I have a tech friend who was gonna do it for cheap and because I thought they’d use the machine and pump every bit of old fluid out.

Since they didn’t use exchanger machine and it’d be his first time doing it. I figured why not do it myself. Lol glad it worked out simple and easily and trans feels way better. Thanks again for the tips & advice!

V8Nissan

I do mine myself as well and am doing it at 20k interval. Bought my car with 17k and did it at 20k and it was definitely dirty. I removed the pan and cleaned the magnets. I also added 2 bungs that I mig welded in. One for temperature probe and one for a better fill port. Basically when you pump fluid in this transmission the idea is to be under the car with it level and when you do the final fluid service, you are pumping it in and then with the trans at 104 degrees you will remove the overfill plug and drain off the excess fluid WITH ENGINE RUNNING. It's like checking a conventional transmission in park with engine running and warm except instead of a dipstick you are using the standpipe in the pan to set the fluid level. I did mine with engine off the first time by mistake and the car shifted funny. After rereading the maintenance procedure from alldatadiy I realized it had to be running and I was about 2 quarts low. Also my trans temp gauge matches what I measure with my Harbor freight laser gun within a few degrees on the pan surface