Best Engine Oil for CAT D6 and CAT D7

Best Engine Oil for CAT D6 and CAT D7

What is the best engine oil for the CAT D6 and CAT D7 dozers?  THESE MACHINES WORK HARD, GET THE BEST ENGINE OIL FOR THE CATERPILLAR D6 AND CATERPILLAR D7 THAT WORKS JUST AS HARD, GET YOUR MONEY’S WORTH BY HELPING YOUR DOZER LAST AS LONG AS POSSIBLE!  Getting the best 100% synthetic engine oil…