Trying to locate dipstick or where to add transmission fluid.my owners manual doesn't say where either is located

On the passenger side behind the engine along the bell housing. Try looking there

The automatic transmission fluid fill location on a 2008 BMW 650i can vary depending on the specific model and transmission type, but generally it is located under the hood and accessed through a dipstick tube.

To locate the dipstick tube for the automatic transmission fluid, follow these steps:

1. Open the hood of the vehicle and locate the transmission fluid dipstick. The dipstick handle is usually yellow, red, or black and is labeled with "ATF" or "trans."
2. Remove the dipstick from the tube and wipe it clean with a lint-free cloth or paper towel.
3. Reinsert the dipstick all the way back into the tube and then remove it again. The fluid level on the dipstick should indicate the current level of transmission fluid.
4. If the fluid level is low, you will need to add automatic transmission fluid. To add fluid, remove the dipstick and use a funnel to pour the fluid into the dipstick tube. Be sure to use the correct type of transmission fluid specified in your owner's manual.
5. Check the fluid level again with the dipstick to make sure it is at the correct level. Add more fluid as needed.

Note: It is important to follow the recommended procedure for checking and adding transmission fluid to your BMW 650i to avoid overfilling the system, which can cause damage to the transmission. If you are unsure about the location of the dipstick or how to properly add fluid, consult your owner's manual or a qualified mechanic for assistance.

1. Switch off the car
2. Pop up the hood and raise it
3. Locate the transmission fluid cap
4. Remove the cap to add fluid
5. Check the owner's manual on what type of fluid your car requires and in what quantity. It is essential to use the right fluid and not anything off the shelf.
6. Remove the dipstick and start filling up the fluid slowly - you don't want to add too little or overfill.
7. Now put back the dipstick, switch on the vehicle and start shifting gears. Remove the dipstick and see the marking to know if you your car has the right amount of fluid
8. Put back the cap by turning it clockwise.

The Transmission Dipstick is located on the passenger side towards the center of the engine compartment near the firewall. It is most likely yellow. You can fid a photo of its location here:
http://pdfcast.org/pdf/2003-cadillac-escalade-owners-manual

on page 339.

As per the owners manual,

"1. Pull out the dipstick(the red transmission one)

2.Using a long-neck funnel, add enough fluid at the dipstick hole to bring it to the proper level.

It does not take much fluid, generally less than one pint(0.5l) Do not overfill. "

The transmission dipstick on the 3800 engine is located behind the engine towards the drivers side. It is right next to the brake fluid reservoir. Hope this helps.

Transmission fluid, readily available at any parts store or Walmart, is found in the transmission pan. Look in your owner's manual's index (which should be in the glove box) to find the dipstick location. Frequently, when you pull the dipstick to check fluid level, the type of fluid to use will be etched on the dipstick at the fill line. It should also be printed in the owners manual under Recommended fluids or fliud capacity. See index under transmission or fluids. What vehicle do you have?

You must locate the transmission dip stick. Look towards the rear near the firewall. It looks like the oil dipstick but larger. You fill up or add transmission fluid through the transmission dipstick hole.
Good luck and thanks for your question and I hope my suggestions help. burdfrenzy
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Do you have the owners manual?

Trans fluid should be located near the back right side.A dipstick marked tran or transmission.You add in the hole where the dipstick goes.

1. A variety of fluids are used for different transmissions. Automatic transmissions use something called - shockingly - automatic transmission fluid. Manual transmissions use a variety of oils: regular motor oil, heavyweight hypoid gear oil or even automatic transmission fluid in some cases. Your owner’s manual will tell you what your transmission calls for. So, get to know what type of transmission fluid should be used for your vehicle. This information is contained in your owner’s manual - if not contact the manufacturer who should be able to tell you.
2. Park your car so that it is level on the ground and leave the gear in Park or Neutral position. Usually the ATF is checked at the idling engine but everything depends on your vehicle. Firstly read your owner?s manual carefully and if it requires the engine to be running, start the car up and wait for it to warm.
3. Locate the ATF dipstick. Usually it is a bit shorter than the engine oil dipstick. In some cases it will have a label on it, so your job will be made much easier!
4. Take the dipstick out.
5. Do the same once again in order to make sure the dipstick indication is true.
6. The color and smell of transmission fluid can also indicate potential problems. Wipe the fluid onto a white sheet of paper or kitchen towel. It is usually red, and should be transparent and clean in appearance and free of black bits or flakes. It may be more reddish-brown because of age but never should be dark or black or smell of burning. You may not be able to fix the car if the fluid shows some of these characteristics, so just seek professional advice.
7. Check the top of the dipstick and see if the fluid marking comes up to the ‘full’ line. Also check that you are looking at the warm reading - there should be one for ‘warm’ and one for ‘cold’.
8. You need to add some more fluid if it does not come to up to the ‘full’ line. Unlike engine oil, transmission oil doesn’t burn up. So if you’re low on transmission fluid, you almost certainly have a leak. Carefully look for leak and if you find it remove as soon as you can. In case it is left it can cause the expensive repair of transmission system.
9. To add the fluid, simply use a funnel to pour it into the system. Add the fluid slowly and keep checking the dipstick until it reaches the ‘full’ point. Remember, you’ll waste your time taking the ATF out again if you add it too much.
10. Wipe the dipstick when finish the work and make sure it is back in securely.

According to the owners manual unless you drive in hilly, or heavy stop and go traffic like a taxi, you should never have to add trans mission fluid unless you have a leak. The manual doesn't even give a fluid capacity for the auto transmission. So I guess when you have to have the auto trans. filter changed, you have to take the car to a transmission specialist. If in fact the filter even needs to be changed. The manual leaks you to believe that the transmission fluid and filter are lifetime products.