clemnd86
Member
I have been using Shell Rotella T6 15-40 in my 2650 since the first oil change. I haven't been able to get 15-40 in quarts only gallon or 2.5 gallon sizes so when I do an oil change I always have oil left over. I change oil roughly every year to year and half. My local O'Reilly's has 5-40 in quarts and am thinking I may switch to this weight. I live on Cape Cod so temps range typically from about O F to about 90 F.