DIY'ing 7A trans fluid, need advice!

jchammond · 05-02-2018, 07:49 PM

Quote:

Originally Posted by AstatenateZ

Perfect so is my process going to work okay? I'm gonna measure it down to the decimel. So if 3.7 quarts comes out and I fill with 4 quarts, drive for 5 miles or so and go through all 7 gears, then drain, re-measure and fill again with same amount, all while being perfectly level. I should be good to go?

Do you (or anyone reading this) think I should use a normal hand pump with a small tube to go all the way into filler hole? Or use a chemical sprayer? I've seen most all DIY'ers on here using chemical sprayer, I feel like the nozzle would be too big for the small filler hole on trans??

I used a chemical sprayer w/tapered nozzle...(pump up style).
you may have to re-pump reservoir to completely empty it.

AstatenateZ · 05-02-2018, 08:27 PM

Quote:

Originally Posted by jchammond

I'd get car level & remove 5mm overfill plug while running (un-warm) and let it come up to temp....you could be low on fluid without realizing it.
A tad may initially drop out,,,but it shouldn't continue with an overflow drip until it gets closer to target temp.

Only issue I have with that, is I live on a hill (not level) so I'll either be driving to my friends house w/ garage or to his work (shop with lift) so it'll be up to temp when I do it. And with it being 80-90 degrees outside, my car will take hours to get back down to "cold" or anywhere close to 104 degrees. So I was thinking just add a tad bit more than what comes out (i.e if 3.7 quarts came out, I'll add 4)
Second go around I'd like to make sure its accurate but again, that'll be after it's been driven 5 miles or so to get new fluids cycled thru all 7 gears. So it'll be warm again once I do it the second time. Any other tips? or ideas?

Quote:

Originally Posted by jchammond

I used a chemical sprayer w/tapered nozzle...(pump up style).
you may have to re-pump reservoir to completely empty it.

Ok cool . I found one at local Lowe's & Walmart ($10) , but not sure if it comes with tapered edge, did you buy that separately? Also what do you mean by "you may have to re pump res to completely empty it? The sprayer? Yes I will ensure it's free of ALL fluids cause I was an accurate amount put back in. So I will ensure all fluids are pumped from sprayer.

jchammond · 05-02-2018, 08:35 PM

Quote:

Originally Posted by AstatenateZ

Only issue I have with that, is I live on a hill (not level) so I'll either be driving to my friends house w/ garage or to his work (shop with lift) so it'll be up to temp when I do it. And with it being 80-90 degrees outside, my car will take hours to get back down to "cold" or anywhere close to 104 degrees. So I was thinking just add a tad bit more than what comes out (i.e if 3.7 quarts came out, I'll add 4)
Second go around I'd like to make sure its accurate but again, that'll be after it's been driven 5 miles or so to get new fluids cycled thru all 7 gears. So it'll be warm again once I do it the second time. Any other tips? or ideas?

Ok cool . I found one at local Lowe's & Walmart ($10) , but not sure if it comes with tapered edge, did you buy that separately? Also what do you mean by "you may have to re pump res to completely empty it? The sprayer? Yes I will ensure it's free of ALL fluids cause I was an accurate amount put back in. So I will ensure all fluids are pumped from sprayer.

Yep=repumping the sprayer,,,you won't mess up-1/2 qt. either way until you can get a place & put it exact....one trans. builder actually allows fluid to drip until it reaches operating temp & then capping hole.

AstatenateZ · 05-02-2018, 08:47 PM

Quote:

Originally Posted by jchammond

Yep=repumping the sprayer,,,you won't mess up-1/2 qt. either way until you can get a place & put it exact....one trans. builder actually allows fluid to drip until it reaches operating temp & then capping hole.

So I can’t just drain the fluid, reinstall drain plug, add a tiny bit more than what comes out, reinstall filler plug. And drive it and do the process twice to ensure all fluid is new?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
To do 7A trans fluid change or not??	AstatenateZ	Engine & Drivetrain	17	05-02-2018 07:28 PM
at trans fluid level	howardrjarret	Engine & Drivetrain	12	09-01-2016 08:12 AM
manual trans fluid changed	jamesj1996	Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs	9	07-04-2014 08:25 PM
diff and trans fluid	roy'sz	Engine & Drivetrain	2	08-05-2013 09:17 PM
Dealer used MT trans fluid in my diff...is that OK?	drisko	Nissan 370Z General Discussions	11	07-24-2009 10:29 PM