My '76 Trans Am sits 11 months out the the year (ie collectors car). I try to take it out every Sept. and give it a good run. (ie enough to run thru the old fuel). Should I really change out M1 with a mere 300 miles on it?? What about the filter?? It seems like a total waist. If I do change oil at 300mi, what would be a better option?? I feel guilty replacing M1 with such few miles.