DIY'ing 7A trans fluid, need advice!

SouthArk370Z

First time, some of the trans fluid may have leaked out during use so you may need to refill with a little more than came out.
Second time, shouldn't be enough time for much leakage, so refilling with same amount that came out should work.

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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??

jchammond

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

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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.

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.

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AstatenateZ

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?