Cutting Bait on 240D

Before I donate my car to charity, I thought someone here who has mechanical ability may want to purchase it. You can search on my login to see the trials I have with the car. Here is the boiled down version & car facts.

1983 240D - 147K miles - 4 speed manual transmission - I purchased 1 year ago when it had I believe 134K. Compression is 400 in 3 and 380 in the last cyl. I get 27-29 mpg with commute crawl to 75 mph driving on average.

Problems 1 - a buzz and vibration in driveline or transmission. Drives me crazy, a local mechanic said he would replace the trans for $500 with a used 4 speed and promised it would solve the buzz/vibration. This is probably my bigger complaint.

2 - I burn about 1 quart of oil every 450 miles. Don't notice smoke at 70 mph but getting on an uphill onramp at dusk or later, LOTS of smoke in the rearview mirror. Can't really see smoke other than takeoff, but its there, trust me! There are three small cracks in the dash 2 less than 1 inch, the third is 1 to 1.25 inch in length.

Good items- the car looks fine, pale yellow, interior fine, a/c is cold and everything else works fine on the car. Radio works fine. Body in good condition. Until I purchased another car 2 weeks ago (don't laugh too much, but it is a 2003 Hyundai Elantra GT that will become my daughter's when she turns 16 in 8 months, then I am in the market again for a car for me), I drove my 240D every day to work 25 miles away. Starts fine, idles fine, drives fine, just those two problems I have been trying to solve and they finally beat me.

Ridge has seen & driven my car when I had thoughts of dropping in a 300 intercooler ala ridge design.

Replaced parts since I have owned it (one year ago) - new driveshaft (balanced) and front & rear flex disks, new valve seals, new timing chain & tensioner, new steering shock, new motor mounts and engine shock, new exhaust mounts, new engine hood pad, new lower PS hose. I think that is about it.

I paid $2430 for it 1 year ago and have had the above parts/repairs completed. Should someone like to purchase it for $1000 (I can get about $1900 tax benefit if I donate it) I will be happy to sell it. I'm in the east bay (SF area).

Thanks. Tim the Taxman