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Used this oil on Detroit Series 60 and on my Cummins. Best conversational oil I have used so far.

Use this oil in the semi tractor regularly

The oil was on sell and you guy's charge me full price

[This review was collected as part of a promotion.] items take along time to recieve and not good on letting me know

[This review was collected as part of a promotion.] Exelent products I trust to used Walmart 100 for the Oder stores a prices tanks.

My husband has a 2016 Peterbuilt and has always used Mobil Delvac. He will use nothing else in his baby!

this is not a synthwtic oil nowhere on the container does it claim it is a synthetic oil but is still a good oil

I buy this diesel oil for old flat tappet gasoline engines. Diesel oil still has zinc and other additives that old gas engines need.

[This review was collected as part of a promotion.] 330000 miles later it seems to be very good oil.