My friend's 1989 Mitsubishi Mighty Max with 198K miles is basic basic transportation.... No power steering.... not power anything.... it has AC and a radio...thats it! I asked you guys about what oil to run a few months ago and someone suggested HDEO.... well, finally we changed the oil with Pennzoil Long Life 15W40...I forget who said it but i was told its good for cars that burn oil and run rough. Well... in the few miles we drove it, it stopped smoking! It still smells like oil is burning but it not in great amounts. The engine revs very smooth! It's incredible! It's engine is quieter than my 4.0L Jeep!!! This thing has a 90hp 2bbl 2.0L I-4! I was driving it home last night and i barely had my foot on the accelerator and it was slowly acclerating to 35! I was speeding without even noticing! My friend is thankful the the advice I gave him but I cannot take the credit since its you guys who helped me alot.... hence why I posted in this section, not the Diesel oil section.