I have been using Mobil 1 10W-40 High Mileage in my 94 and am satisfied with it. The most oil I have added is a 1/2 quart or slightly more and that is usually after long trips and some spirited driving. I also wait 12 to 15 hours before I check the oil. I know everyone has a different way or time they like to check, but I have found that it takes awhile for the oil to fully drain into the pan after the engine has been running. I base that on the readings I get on the dip stick say an hour after running compared to the 12-15 hours waiting period. Your readings or methods may vary.....
