I have bought my car just about a year ago and have put 20k miles on it so far. I have yet to change the tranny fluid in this car, so I dont know when the last time it was changed. The fluid looks ok, but people tell me to change it every 20k miles. Someone told me that if the fluid looks ok, dont change it or you will have more problems--in other words, wait until it has some discoloration. As of now, the tranny shifts smooth and has no problems whatsoever. What is the interval for changing the tranny fluid on a 89 300E? It doesnt say anywhere in the manual for when to change it-except checking it for correct level. If I have to change it, what fluid do you recommend using?



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Agron
1989 300E
Monotoned Smoke Silver
97 Style Replica E420 Rims 205/55/16
Euro Headlights
Clear Corners
20% Tint
12" Sub-enclosure

For an '89 300 E: check & correct automatic transmission fluid level every 15K miles; renew trans. oil and filter every 30K miles. Use M-B approved Dexron transmission oil (presently available as Dexron III). If the transmission is in good condition, then changing the oil more frequently will cause no harm.

The torque converter on your vehicle is equipped with a drain plug; when renewing your transmission oil ensure that the converter is also drained (as it holds approx 2.1 qts).