YOUNG MAN , WANT HURT MIX ANY KIND OF GREASE , I LIKE RED OR YELLOW GREASE BECAUSE I CAN SEE GREASE COME OUT A LITTLE BIT , KNOW BEEN GREASE ! . I HAVE 2 KUBOTA TRACTOR , EVERY TIME I USE THE TRACTOR GREASE THEN , AFTER I GET THUR WHEN MY TRACTOR , I LET THEN COOL DOWN THEN I WASH THEN OFF I SERIVCE AN MANITANCE LIKE CLOCK WORK EVERY TIME ! 15 - 40 SHELL ROTELL DIESEL OIL / KUBOTA OR DONALDSON FILTERS