3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
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I just checked my tranny fluid and it looks on the dark side but i've never changed tranny fluid before. it looks like there's a drain plug on the rear bottom of the tranny fluid pan but i have no clue where to fill it back up and how much to fill it once i find that spot! searching google hardly brought up anything for BMW tranny change, besides other models. can anyone help me out?
Take it to a reputable shop and have them change the fluid and the FILTER, I thought your was an automatic, correct? I wouldn't change the fluid and not the filter too!
most any thing will work. just do not buy redline. last shop i worked in we used mobil1 in the racecars it was like a 90 weight. and im asuming that its not an automatic cause of the drain plug. correct?
it is an automatic, but there def. seems to be a drain plug on the bottom rear of the tranny pan. it has a hex key. and i still need to get a filter. i have 2 manuals for the car and still cant find where the filler cap/plug is located. is it on the pan or is it on the transmission itself? and if i brought it somewhere with the new oil and filter how much do u think it would cost me? thanks guys!
it is an automatic, but there def. seems to be a drain plug on the bottom rear of the tranny pan. it has a hex key. and i still need to get a filter. i have 2 manuals for the car and still cant find where the filler cap/plug is located. is it on the pan or is it on the transmission itself? and if i brought it somewhere with the new oil and filter how much do u think it would cost me? thanks guys!
you fill through the dipstick and check tranny oil level with engine idling.
check your local papers for the average price of a tranny filter and oil change. In California, i believe it is around $150.- & about $40.- for just the tranny oil change.
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1988 325is tranny fluid change 
searching google hardly brought up anything for BMW tranny change, besides other models. can anyone help me out?
Take it to a reputable shop! 
and check tranny oil level with engine idling.
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