Valvoline Premium Blue 15W-40 Heavy Duty Diesel Oil, 1 gal. / 4-pack

from Phil

Only oil I use in my 2001 Ram 2500 5.9 Cummins .My truck has 207000 miles and have used Valoline Premium blue for 130000 miles with no problems

from Doug

I will continue using this oil in my 2017 Ford Power stroke with now 120k miles on it

from maximo

I use it in all my diesel engines with never a sludge buildup

from Linda

[This review was collected as part of a promotion.] Valvoline has never let us down! Never had a engine last less than the 250K miles or more, that vehicle had once finally sold! If only the plasti...

from Terry

Since I run this in my motorhome it doesn't get many miles between oil changes so it doesn't pay to run synthetic oil. I change it around 6000 miles. Then engine runs good ,pressure is good , and t...