7AT fluid change

drdre8424

So is getting the fluid changed a bad idea or not?

2009_370z

So cars WITH high mileage and 7AT should or should not get a fluid change?

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SEIBON/EVO-R/AAM COMPETITION/TSW WHEELS/MICHELIN/Z1/EBC

jchammond

Change it; it's just a drain fill & repeat procedure,,,when i first did mine at 50K, it looked like coffee/ but did not smell burnt.

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

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2009_370z

Thanks for the input. So how often should it be changed and is it necessary or it's just a good thing to do? I have almost 101,000 miles on mine.

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SEIBON/EVO-R/AAM COMPETITION/TSW WHEELS/MICHELIN/Z1/EBC

jchammond

Wow; that's a bunch-My owners manual doesn't specify; but service manual shows you how?? I asked my dealer & they told me 50-60k,,, I know how hard I run my ~Z~, so I did mine at 50 & plan on doing a single drain & fill every 10 ( to keep it clean) only about 3.5 quarts come out when you drain (level ground) more on ramps.
I recommend that you contact your local dealer or trusted tranny shop ; maybe Level 10 or someone like that & get their opinion. I've been working with hydraulics a long time & your fluid can't be too clean::: but there are places/ shops that will tell you that your tranny may go out if you service it, because it will break loose some potential caked on dirt;etc...If you have it flushed; be sure they use a good machine or run it I between drain and fills... Mine took about 12ish quarts to get really clean....& I used Valvoline Max life Nissan S-matic approved


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

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2009_370z

LOL, yeah they're a lot of miles on my car. I'm the third owner so I'm not sure if it has been changed or not.

See, that's the part that always confuses me when they say you shouldn't change it? So as long as I go to a reputable place, I should be good?

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SEIBON/EVO-R/AAM COMPETITION/TSW WHEELS/MICHELIN/Z1/EBC

FPenvy

i'm calling Nissan garages today for mine. 48k miles and randomly now when the car is hot or up to temp I am getting a small clunk/jerk when it downshifts into 2nd.

based on it doesn't do it when cold i'm guessing thicker fluid when cold so no issues. when hot it thins out due to age/mileage and that's when the clunk or whatever you want to call it occurs.

sadly the first dealership I called said they've never worked on a 370....I hung up.

I wish I had a lift and the tools to do it myself but a stealership may be the easier option this time around.

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324whp/258wtq AAM Tuned |F.I. NonRes CF CBE/NonRes TestPipes #373|UpRev Tuner|Akuma Motorsports Intakes|Z1 34 Row Oil Cooler

jchammond

Kinda hard to give thorough instructions: not very hard/ but if you can hook up with someone who's got a machine like FPenvy says... That is very good/ it will flush torque converter and all with one shot.


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

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FPenvy

just got off the phone with another dealership where I know the owner and semi-trust their mechanics lol

the service manager said they've done multiple 370 AT fluid changes and work on GT-R's so they are set-up for it.

think he said it's $180 and takes 1-1.5 hours. but doesn't it take like $150 in fluid to change out fully? or did I misread the tranny capacity?

also he said that 100k mile thing is BS they tell people every 30k.....guess i'm a bit overdue.

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324whp/258wtq AAM Tuned |F.I. NonRes CF CBE/NonRes TestPipes #373|UpRev Tuner|Akuma Motorsports Intakes|Z1 34 Row Oil Cooler

jchammond

Believe it or not ; our local dealers use Kendall's s-matic equivalent fluid in their bulk tanks...imagine that.. But they will sell you the 10,12,14$ per quart stuff in parts.
The Valvoline equivalent is about 5$ per quart or 18$ per gallon at Walmart.
I just made me a rig at the house to do it.


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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