DIY INFINITI G35 + 350z | Transmission Fluid Change (Matic S) (Auto) (Nissan) 

I have an 08 g35 sport. 102,000 miles never replaced automatic trans fluid. Should i just do drain and refill?

It’s up to you to do the research, I bought the car and did it at around 90k and 120k.

Thanks for the tip. I am about to change the transmission fluid again next weekend and will grab some washers. Although the old one worked fine last time, no leaks, and I never over tighten it either.

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I don’t do it every time but you probably should.

I’m trying to find out too . Did you ever find out

You can check it both cold and hot. To check it cold use the back side of the dipstick. One side says HOT, the other side is used by looking at the two indents at the bottom of the dipstick. Here is what the Service Manual States: A/T FLUID LEAKAGE AND A/T FLUID LEVEL CHECK 1. Warm up engine. (see temp at #4) 2. Check for A/T fluid leakage. 3. Loosen the level gauge bolt. 4. Before driving, A/T fluid level can be checked at A/T fluid tem- peratures of 30 to 50°C (86 to 122°F) using “COLD” range on A/ T fluid level gauge as follows. a. Park vehicle on level surface and set parking brake. b. Start engine and move selector lever through each gear posi- tion. Leave selector lever in “P” position. c. Check A/T fluid level with engine idling. d. Remove A/T fluid level gauge and wipe clean with lint-free paper. CAUTION: When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one. e. Re-insert A/T fluid level gauge into A/T fluid charging pipe as far as it will go. CAUTION: To check A/T fluid level, insert the A/T fluid level gauge until the cap contacts the end of the A/T fluid charging pipe, with the A/T fluid level gauge reversed from the normal attachment conditions. f. Remove A/T fluid level gauge and note reading. If reading is at low side of range, add ATF to the A/T fluid charging pipe. CAUTION: Do not overfill.

See below.,

It may not have one, some vehicles don’t.

In that case it is important to measure the amount of liquid that you take out, make sure you replace the exact amount.

If it is Castrol Transmax "Import" version, then it is fine for use in the Nissan.

I stick with Nissan OEM products since I’m already saving money on labor.

Oh okay thanks I initially got castrol transmax,atf/cvt universal but didn't make a good research before getting it...guess I'll just have to go for the either Nissan matic j or valvoline

Always use OEM fluids, the price might be a little higher but the fluid was designed specifically for this car. No point in using something different if there's even a small chance it will damage the trans.

Drain when cold, it’s safer plus the ATF is at the same temperature when filling back up.

Dipstick on this car is bolted down. Check if it has a bolt, 10mm or 8mm attached to the dipstick.

Better than before. Although I wasn't having any issues before hand, I noticed that my shifts were a little rough (thought it was normal, since it's a sports car). After doing the fluid change it felt better, shifts smoother. But again, I did the fluid change as maintenance, not because I thought I had a problem.

I don’t think so.

Check if it has a trans dipstick in the same location shown. If it does, it should be essentially the same. If not, you need to figure out how the trans fluid will be refilled.

Havent changed my my transmisson fluid either on my 2008 g35 with 189k miles. Im gonna do it too just drain pan and fill with 5 quarts thats it after a few cycles should be clean again. Never trust the stealership ok

I would double check if theres no dipstick then you might have to pump it back in. Id ask a transmisson shop before anything. Someone would builds transmissons would lead you to the right direction.

I bought mine with about 70k miles and did the transmission fluid change at about 90k. It shifted smooth before and still shifted smooth after. I consider it a maintenance item.

Thank you for sharing!!@@G35GarageNation

About 110k miles we’re on the vehicle. However I previously had my mechanic do a transmission fluid change at about 70k miles. I wouldn’t mind doing the fluid change every 24k miles since it’s so easy and relatively inexpensive.

Different transmission so I’m not 100 percent sure but I would check 1) dipstick is there for refill and 2) under the car find the drain bolt. Should be straight forward after that. Measure and refill.

Yes there is an access point on the splash guard. Same as the oil filter and oil pan bolt.

@@G35GarageNation RWD model’s ATF drain bolt is not covered by the splash guard..

Good question, the dipstick has a fill indicator so I checked after refilling and it was at the correct level.

And also the Transmission Filter if the bolts for that need to be torqued down.

Sorry I could not find torque specs for the bolt either. I would be very careful not to tighten too much.

@@G35GarageNation thanks I ended up successfully doing the drain and fill thanks man.

Awesome to hear this! Great job!

join the NicoClub brah they will help tell u the torqe settings

Auto-parts store like Autozone or Oreilly’s

I believe there are some differences, the bolt may be Allen wrench/hex key style. Also, the refill may be different. I would check the engine bay before starting to make sure there is a dipstick in a similar location to the one shown in this video.

Correct, this is a fluid change (about 5 quarts). Vs a fluid flush which replaces the majority of the fluid. From my experience it is better to do fluid change every 30k but you should check your manufacturer’s recommended interval.

The factory service manual says to drain and fill 3x to do a full replacement. That's what I did first time but now I just do a drain and fill. Last time I did it the fluid was still bright red and clean

I was about to do it for a 3rd time last month. Checked the fluid dipstick and the fluid is bright red! I decided to leave it, I'll keep an eye out in another 20k miles or so. So far the car STILL shifts like new.

When you flush that’s how much you have to do . If you remove the full pan pretty much everything empty out removing the value cover pretty much empties everything out

From what I understand Matic J was discontinued by Nissan. Go to the dealer with your vin number and ask what fluid is correct, they will recommend Matic S.

@@G35GarageNation did you notice any difference in your 5AT after switching to thinner matic S fluid? (Does it shift smoother and better than matic J?..)

Zero difference. It shifts the same as before. @@Qkfltpdls777

@@G35GarageNation ok i see. Thanks for the reply!

It was not a magnet, if you see in the video I held the bolt against the 10MM socket with my other hand. You can buy a telescoping "magnet pick-up tool" if your hand doesn't fit down there.

@@G35GarageNation Thanks for the reply. Could you please create a video what's the correct transmission fluid level and its procedures?

@@Qkfltpdls777 This car has a measuring stick for the transmission fluid as shown in the video. If you are unsure of the amount you should refill based on the stick markings. The easiest way I do it is by using a bucket with liter measuring marks, then I just refil the exact amount I took out. As shown in the video.

@@G35GarageNation but ATF’s volume gets larger when it’s hot, and gets smaller when it’s cold..

@@Qkfltpdls777 so you make sure to do the fluid change when the car is cold…

Didn’t want to drop the pan and have to reseal it, risking causing a leak. Not sure about the filter though I did not research it.

Unfortunate!

Not sure about that. Should not be very different. 1. Find refill hole, if it’s on top of the engine like in this video then should be a similar process. 2. Removed splash shield under car and Find transmission pan bolt. Rest should be similar.

How many miles do you have?

Depends on miles and if it has ever been changed before.

Yes

Correct. This is a transmission fluid “change”, not a “flush” which I’ve read is not recommended. I’m about to do this procedure again next weekend on my g35s. It’s been over 30k miles since I did it last.

@@G35GarageNation THE BEST thanks

Unless you have records there’s no way to know. Check the transmission dipstick as shown in the video, if the oil is dark I would consider changing the transmission oil as shown.

No, however it doesn’t seem difficult.

When your splash guard is all messed up you will need to remove it.