I have an 87 300E with 212k miles. My transmission has a slow leak (I have
>to add about a quart of fluid every 6-8 weeks) and sometimes when I shift
>from park into reverse or drive there is a thudding sound when the fluid is
>low. should I bother investing in a transmission flush and change? A
>friend of mine who dabbles in cars told me that if I go to a lube place
>(jiffy lube, firestone, etc.) the flush may actually do more harm than good.
>Everything seems to be currently working fine (*knocks on wood*) although
>there is a little slipping when changing between gears while the fliud is >low.
>
>TIA
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