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Bad transmission dipstick giving incorrect reading of atf level?

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Old 03-02-15, 09:05 AM   #1
LexBrett
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Default Bad transmission dipstick giving incorrect reading of atf level?

Hi All; I just changed out my leaking transmission pan this weekend. Drain plug was stripped and leaking.

I put 3.5 quarts in and now I am getting inconsistent oil levels on the dipstick. Last night it was at exactly the correct level. Today it was low.

My dipstick is bent up and goes in hard. Could the dipstick be giving a bad reading? Should I buy a new one?

Btw I check for leaks and the pan and gasket look perfect..
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Old 03-02-15, 09:33 AM   #2
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What year?
Please do not take this wrong but was it hot when you checked it last night and when you checked it again today was it cold?
Is so, the readings will change.
Do you have an owners manual?
If so, it should provide you with the steps to correctly check the level.
Also, when you say the dipstick is bent, what do you mean exactly?
Can you post a picture?

The dipsticks are difficult to push in...it stops about half way, if I recall correctly.
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Old 03-02-15, 09:33 AM   #3
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Originally Posted by LexBrett View Post
Hi All; I just changed out my leaking transmission pan this weekend. Drain plug was stripped and leaking.

I put 3.5 quarts in and now I am getting inconsistent oil levels on the dipstick. Last night it was at exactly the correct level. Today it was low.

My dipstick is bent up and goes in hard. Could the dipstick be giving a bad reading? Should I buy a new one?

Btw I check for leaks and the pan and gasket look perfect..

I have a 2005 sc430 and no dipstick What year did the dip stick stop ?
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Old 03-02-15, 10:00 AM   #4
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I checked with the car at full running temp with engine on both times. I just bought a new dipstick just in case. I used exactly 3.5 quarts. Measured a liter more than 2 liters when I drained from the plug, and then there was about a quart or so left when I removed the pan. I checked for leaks under the car.
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Old 03-02-15, 10:51 AM   #5
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I have a 2005 sc430 and no dipstick What year did the dip stick stop ?
It should have been the year when they came out with the six speed auto. Do you have a six speed?
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Old 03-02-15, 11:12 AM   #6
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It should have been the year when they came out with the six speed auto. Do you have a six speed?
No Mine is a 5 speed and there is no dip stick for the transmission
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Old 03-02-15, 11:13 AM   #7
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I checked with the car at full running temp with engine on both times. I just bought a new dipstick just in case. I used exactly 3.5 quarts. Measured a liter more than 2 liters when I drained from the plug, and then there was about a quart or so left when I removed the pan. I checked for leaks under the car.
How do the two dip sticks compare?

"Measured a liter more than 2 liters when I drained from the plug..." Does this mean you drained three liters?
You know, the transmission may have just been over serviced before you drained the transmission.

Consider doing this...do not add anymore, just check it the same way over the next three days and record your findings each time. If you have major differences each day, then you need to find the problem, if they are the same level and it is in range, leave it alone.
If it is consistently high or low, correct as required.
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Old 03-02-15, 11:18 AM   #8
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Good advice. I will check for three day to examine whether there are variations in the fluid or it is consistent. If it is consistently at the same level, I will add fluid to get to the correct level. But if there are variations it is probably the stick...
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Old 03-02-15, 02:35 PM   #9
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LexBrett, did you compare the length of the new dipstick to the old dipstick?

Also, what year is your SC430?

Just trying to help you out...can you answer the two questions above?

Here are photos of the transmission dipstick from my 2002 SC430.

612mm or just over 2ft in length.

Click the image to open in full size.


Click the image to open in full size.


Click the image to open in full size.
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