How do you check the fluid level of an X308 transmission?

 

The XJR uses the Mercedes 722.6 transmission and has a dipstick tube but does not have a dipstick. You can buy at ebay or amazon and get some extra break away caps also. Instructions will be included.

Many Chrysler cars and of course Mercedes have the same tranmission, and you could stop at a dealer or transmission shop and ask them to check it.

 

Awesome! Where is the dipstick located?

 

The tube is at the right rear of the engine compartment. It has a plastic cap that breaks away to allow the dipstick to be inserted.

 

$7.98 shipped, ebay. I'll have it tomorrow.

 

The XJR dipstick is unlike most "normal" ones. It bottoms out and measures up from the end of the gauge, rather than bottoming out on the upper handle to the top of the tube.

 

Thanks for the info but I don't understand what you mean by 'bottoming out' (does that mean all the way in?) and 'top of the guage/upper handle' (does that mean on an XJR the fluid should come to the very top of the tube?).
Thanks Again.

 

The dipstick should have instructions included. It's difficult to explain without pictures. If you do a search for 722,6 fluid level you will find a number of youtube links showing you the procedure.

 

You also need to read the temperature of the transmission fluid as the dipstick shows a range

 

What I was trying to explain, although obviously very poorly, is that this is not like a normal dipstick which measures the distance to the fill level from the top of the tube. The stick is pushed down until the top handle end strikes the top of the tube. That means the level measured is dependent on the length of the tube and the length of the dipstick.

The MB (or XJR) design depends on the stick striking something (the bottom of the pan?) at the bottom and measures the distance from the tip of the dipstick to the level, not dependent on the length of the dipstick, as long as it is long enough to bottom out. You could very well use a stiff wire or another long dipstick to do the measurement and google "MB transmission dipstick" to find the measurements vs fill levels.

BTW, my ebay dipstick did not come with instructions.

And... while we are on the subject, although I did check mine vs the IDS measured transmission temperature- as long as you are checking at normal ambient temperatures and you have given a good run up to temperature on the engine, just look at the "cold" vs "hot" measurement marks on the stick and set the level for about 3/4 of the range. You really do not need to worry too much about the absolute temperature unless you are **** retentive. It is, after all, a car transmission and the absolute perfect level just is not all that important.

 

You guys are awsome, thanks!