Shell Rotella T 15w-40 Motor Oil 1 Gallon
Product Review (submitted on December 4, 2012):
I sold hundreds or maybe thousands of gallons of this oil when I worked at Mayflower Transit when it was located in Carmel, Indiana. All of the old school, 20-40 years on the road, and new truckers used this oil on their rigs and most changed their oil at 10K miles but some would go 20K -40K miles on one ten gallon Rotella 15W40 oil change.
Some guys in the service shop used the same Rotella 15W40 on their pick-up trucks, year round. Good all around oil for all heavy duty applications.