I am trying to check the level of my tranmission fluid on my 2008 BMW 328 xi. I tried loosening the trans fluid plug that had an allen wrench hole. I used the proper size allen wrench and I soaked the plug with some penetrating oil. I could not free the plug. It is my understanding that the level is determined by how much fluid comes out when you remove the plug. I am attaching a photo of my plug. Can someone please confirm that I have the correct plug, and if so, what other measures besides using penetrating oil can I use to loosen the plug Thank you for your help. John
This a manual? That looks like a drain plug. I would NOT remove unless you are replacing your fluid. Personally I like PB Blaster. Spray and walk away for a little while. I've found it doesn't work if you watch it. Take a look at this video.
You have a picture of the drain plug DO NOT remove that one unless you wanna loose all your trans fluid and it is really pricy stuff. The fill plug on the side of the trans is where you can check fluid level. This is done by having the vehicle slightly warm and on a level surface with the vehicle running remove the fill plug if fluid comes out put plug back in right away and you know the trans is full. If no fluid comes out then it is low. Do you have any external leaks?
