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Discussion Starter · #1 ·
Well I did a drain and fill trans flush with toyota T-IV fluid about 6k miles back. I didnt realize that I hadnt filled the fluid all the way. But anyway it drive like a champ. NO rough downshifting into 2nd and not rough shifting at all. Well a few days ago I was checking all my fluids and realized my trans fluid barely registered on the tip of the dipstick. Well being the car lover I am, I went and bought a couple quartz and got it right into spec. Well it drive like crap again. ROUGH 2nd gear and all. To prove my theory I will leave it for a 100 miles or so and then drain some out again in 250 ml increments until it smartens up again. I will report my findings. Im no expert on transmissions but it seems, at least in my car, having the right amount of fluid builds too much pressure or something and it shifts like crap.
 

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Well I did a drain and fill trans flush with toyota T-IV fluid about 6k miles back. I didnt realize that I hadnt filled the fluid all the way. But anyway it drive like a champ. NO rough downshifting into 2nd and not rough shifting at all. Well a few days ago I was checking all my fluids and realized my trans fluid barely registered on the tip of the dipstick. Well being the car lover I am, I went and bought a couple quartz and got it right into spec. Well it drive like crap again. ROUGH 2nd gear and all. To prove my theory I will leave it for a 100 miles or so and then drain some out again in 250 ml increments until it smartens up again. I will report my findings. Im no expert on transmissions but it seems, at least in my car, having the right amount of fluid builds too much pressure or something and it shifts like crap.
How many miles do you have on your car?
And also make sure your measuring correctly as the level varies with the temperature.
 

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Transmission oil level - checking

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Warning! Take great care when the vehicle is raised, the splashguard under the engine is removed and the engine is running. Watch out for rotating components on the engine and the radiator fan. Be especially careful with your hair and fingers.

Warning! Avoid skin contact with the oil.

Note! Only use transmission oil with Volvo part no.: 116 1540-8 (1-litre), 116 1640-6 (4-litre).

Check

Conditions



The difference between MAX and MIN volume is 0.3 liters. Check the oil temperature in the transmission.
At room temperature (+20 °C) the oil level is near the MIN marking on the "cold area".
At room temperature (+20 °C) and low oil level the oil barely reaches the dipstick.
The "cold range" (+40 °C) is reached after approximately 15 minutes idling in the workshop, while the "hot range" (+80 °C) is reached after approximately 30 minutes highway driving at an air temperature above +15 °C.

Note! Carry out the check at an oil temperature of +80 °C. Select the digital display parameter. Select the parameter for the transmission oil temperature.

Preparing to check the oil level
Position the car on a hoist.
Apply the parking brake.
Apply the foot brake.
Let the engine idle.
Set the gear selector in position P. Move the gear selector through the various gear positions, stopping for approximately 3 seconds in each position.
Return the gear selector to position P. Wait 2 minutes before checking the oil level.

Checking oil level



Allow the engine to idle with the gear selector in position P.
Raise the vehicle. Remove the splashguard from under the engine.
The dipstick must be pushed down completely in the dipstick tube.

Caution! Wipe off the dipstick with a nylon cloth or similar. Do not use a rag which may leave lint or threads.

Low level (topping up)
Top up with oil through the dipstick pipe. Take the temperature into account when topping up with oil.
Check the oil level again. See: Checking oil level.

High level (overfilling)

Warning! The oil may be very hot if the vehicle has just been driven. Avoid skin contact with the transmission oil.

Warning! The transmission must not be operated if the oil level is too high. This can cause increased operating temperatures and oil leakage.




Note! Strict cleanliness is important.

Drain off oil.
Undo the drain plug.
Allow some of the oil to drain out and reinstall the plug. Tighten. See: Tightening torque See: Specifications\Mechanical\Tightening Torque.

Hint: The oil can also be sucked out through the dipstick pipe using an oil suction syringe with a narrow gauge hose.

Check the oil level again. See: Checking oil level.

Finishing

Installing the splash guard
After checking, install the splashguard under the engine.
 

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Discussion Starter · #4 ·
ya I was following that. It barely reached the dipstick when it was hot. 1hr driving. since the temperature here is about 100 during the day anyway, I check the level now at 2pm and its just below the lowest low mark which is right. I will drain 100 mL off today and test drive again to see if it helps.
 

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Discussion Starter · #5 ·
well lowering the level back down to barely touching the stick has fixed the issue. I took out aliqouts of 100ml and tested for one day. it wasnt until I was basically back down to the bottom that it drove nice again. I dont know what its doing to my trans, but not shifting hard cant be worse than what it was doing when at the "right" level. besides with 105k already I wont have it but another 20k.
 
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