Tranny fluid level question
Yesterday I did a drain/fill on my '16 NX200t. ( at 106K kms ) Vehicle was on all 4 wheels on level floor of garage. Ambient temp of garage 21 degree C ( 72 F ) so was vehicle & its components. Total amount of old oil was 1700 mls. Replaced with same amount of new. I replaced with Idemitsu. Planned to repeat twice more @ 30K intervals. Fully realised with this method, factory specified correct level was only assured if level/volume were right in the first place. I believe there was mentioned somewhere of checking oil level when oil temp was 40 C ( 106 F) with the o'flow tube. Can anyone verify this bit of infor. Failing that I'll try the OBDll w/the jumper wire method. TIA.
This is one of the methods with SST.
Park your vehicle on a level ground, mark a spot in the middle of the front and rear pumpers. Measure the distance from the ground to the marked spots on the pumpers and jot down the measurements on a piece of paper
Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure the tilt angle from the front to rear and side to side of the vehicle is within +/-1°≈ 1", side to side ≈ .5")
The fluid temperature should be between 40°C (104°F) to 45°C (113°F)
The acceptable margin of error when adding fluid is +/-20 g (0.7 oz.) or +/-25 cc (1.5 cu in.).
Pay extra attention when adding fluid because adding an excessive or insufficient amount of fluid may cause a malfunction in the automatic transaxle.
Park your vehicle on a level ground, mark a spot in the middle of the front and rear pumpers. Measure the distance from the ground to the marked spots on the pumpers and jot down the measurements on a piece of paper
Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure the tilt angle from the front to rear and side to side of the vehicle is within +/-1°≈ 1", side to side ≈ .5")
The fluid temperature should be between 40°C (104°F) to 45°C (113°F)
The acceptable margin of error when adding fluid is +/-20 g (0.7 oz.) or +/-25 cc (1.5 cu in.).
Pay extra attention when adding fluid because adding an excessive or insufficient amount of fluid may cause a malfunction in the automatic transaxle.
The volume difference between 70F and 106F is trivial, do not worry about it. If you started the car, shifted through gears, and checked the fill level while running, you are good. If you did not do those things, then repeat it correctly.
The thermal expansion rate of ATF is in the neighborhood of .0007/degree C. If you check the value and do the math, the difference in the pan volume will be around an ounce or two - more precision than the leveling and fill hole will accommodate. You are welcome to do this yourself, thus my explanation of the (simple) chemistry involved. Do not get bent about the temp if it’s in any range from 70F to 130F. If in doubt, just run the car five minutes or so and you’ll be in range close enough.
These transmissions are fully capable of running 100% fine being a quart off - either way. They in fact often come from the factory that way (yes). Sweating an ounce or two is bizarre.
The thermal expansion rate of ATF is in the neighborhood of .0007/degree C. If you check the value and do the math, the difference in the pan volume will be around an ounce or two - more precision than the leveling and fill hole will accommodate. You are welcome to do this yourself, thus my explanation of the (simple) chemistry involved. Do not get bent about the temp if it’s in any range from 70F to 130F. If in doubt, just run the car five minutes or so and you’ll be in range close enough.
These transmissions are fully capable of running 100% fine being a quart off - either way. They in fact often come from the factory that way (yes). Sweating an ounce or two is bizarre.
Last edited by Oro; May 30, 2025 at 10:40 AM.
Thread
Thread Starter
Forum
Replies
Last Post
Mitleider
LS - 4th Gen (2007-2017)
2
Aug 27, 2021 05:11 AM











