mercedes 1992 400e

i'm looking at buying a 92 400e with 93000 miles,seller is firm at $15,500 i took it to the mb mechanic to check,he thought it was an outstandig car with all records,my question to him and you folks is am i going to have high amount of repairs at this and further milage? his response was you are not going to be nickle and dimed till about 200,000 miles,he said change oil every 3000 miles and front brake pads! any comments would be very helpful!thanks in advance!

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