I have to agree with Zacharias. Just drive it if all is well.

I don't have the SD. But, I sure wish I would have bought one now. For the better part of 11 months last year I was driving 720 to 1040 miles per week (over 5 days) with my 300D. I virtually had no problems at all except a speedometer cable failure, a voltage regulator failure and an oil leak at the turbo oil drain. All of the above was inexpensive and relatively easy to fix. I don't drive the car much anymore as I have a newer one now. But, it is ready to do it again if the new fails me.

__________________
AJ

1985 300D (SOLD)