• Recommended for applications specifying API CI-4+ and prior specifications • Controls soot and wear • Reduces oil consumption and emissions • Delivers maximum engine protection over extended drain intervals • Provides outstanding protection and performance in temperature extremes • TrySignature Series Max-Duty 15W-40 for a serious upgrade
• Recommended for applications specifying API CI-4+ and prior specifications • Controls soot and wear • Reduces oil consumption and emissions • Delivers maximum engine protection over extended drain intervals • Provides outstanding protection and performance in temperature extremes • TrySignature Series Max-Duty 15W-40 for a serious upgrade
Premium diesel oil providing excellent performance in diesel engines where highly effective control of wear and deposits is vital. Built with heavy-duty dispersant/detergent additives with 12 TBN, Synthetic Heavy-Duty Diesel & Marine Oil neutralizes acids and controls soot thickening from EGR and blow-by to protect against corrosion, cylinder bore polishing (wear) and varnish/sludge deposits. It resists heat and breakdown and is formulated for extended drain intervals.
I have been using Amsoil products in all my vehicles for almost 20yrs ( diesel truck, harleys, hot rods) without a single oil issue. I recommend these products to everyone.
I’ve owned my 1998.5 Dodge Ram 3500 Dually since 2000 and, although I tried Kendall Super D3 in the beginning, I wasn’t quite pleased with it and the availability of it. So I changed to Amsoil and I have never looked back. I now have 366,000miles on my truck and it still runs smooth as silk with no engine problems whatsoever. I also run Amsoil gear oil in the front end, reared, transmission, and transfer case. I change the oil on an extended mileage plan in conjunction with my mechanic and I simply could NOT be more happy with this product. Combined with an Amsoil Bypass filter system my truck will very probably outlast me!!!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great Oil
By 
JIM, 
a 
Verified Buyer 
from 
Sun City, AZ 
on 
May 24, 2022
I have used this oil for many years. Changing once a year, approximately 12,000 miles. My truck continues to run like new with 257000 miles on the clock
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
Liked it way better before the prices went sky high
By 
RUSS, 
a 
Verified Buyer 
from 
South Louisiana  
on 
April 18, 2022
Been using this oil since first oil change.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
BEST OIL FOR MY CUMMINS 8.9 DIESEL PUSHER EVER
By 
DAREDEVILLEGEND, 
a 
Verified Buyer 
from 
TAMPA BAY AREA, FLORIDA 
on 
April 17, 2022
The AMSOIL for my diesel is AMAZING. I would never use anything else.
Thank You for such a GREAT Product :-)
God Bless
Bob
Bottom Line
Yes, I would recommend this to a friend.
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