Just had my 440/6 rebuilt and put several hundred miles on it and wanted inputs on best engine oil options and where to get it when I change the oil. The engine is a basic 440 build, 030 over and a mild cam, new headers, auto trans, with a new 4 row radiator. My engine builder recommends a good quality race oil, recommending 20w 50 for the summer and 10w 30 for the winter (though the car is parked during the winter months). What oil would meet my needs? Where do I get it? Do I order it and have it shipped to my home address or go to a parts store and get it.
Thanks!