My car is running AWESOMELY right now. Starts well (though she does think about it still when the cold is 20* or below), idles very smoothly, goes from 0-60 in about 18 seconds. That was tested from a stop at an on ramp onto I-25 while switching lanes. It takes 5 seconds from a stop to 20MPH.

So, my question is, can I do things like Compression Tests before problems occur so I have a baseline of what she was doing while happy? Just so I know how to do it in the future?
Maybe cleaning the ALDA, too.

I was also thinking of doing a diesel purge just because. Would this be overkill since right now she's doing well. Is there usch a thing as too much preventative maintenance?

Thanks!

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Ginny in Denver-ish
78 300SD, 265K (mine)