Older Diesel Emission Standards

See how AMSOIL products perform in the lab and in the field.

Keep aging diesel engines running longer

Diesel engine oil for older emission standards

Diesel synthetic oil that protects like no other

It’s the last of a legacy. Whether you drive the 7.3 Powerstroke, a Dodge Cummins, or an LBZ Duramax, the workhouse power plant under your hood hasn’t failed you yet. Running powerfully without the complicated DPF system that newer trucks use and operating without micromanaging electronics, it’s the right truck for your hauling, towing, or business needs. And you can keep it that way with diesel engine oil that protects better than any other: AMSOIL.

Whether you can’t bear to give up the truck you can work on yourself or you’re avoiding the complications that come with modern diesel particulate filter regeneration, using AMSOIL will help you keep your engine at its best for longer between rebuilds.

Better fuel economy from lower friction and better combustion chamber sealing for improved emissions

What AMSOIL does for diesel engines?

If you don’t want to deal with particular filter problems and all that ‘clean diesel’ talk, keeping your pre-2007 truck running is exactly what AMSOIL can do for you. With products like Series 3000 Synthetic Heavy Duty Diesel Oil, experience lower EGR-clogging soot deposits and longer-lasting turbocharger performance. Even under the extreme stress of high-compression diesel engines, Series 3000 Diesel Oil performs better. Longer drain intervals, better fuel economy from lower friction, and better combustion chamber sealing for improved emissions and lower oil consumption – they’re all benefits from using AMSOIL.

Choose the right diesel oil for your application from three products:

  • AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil
  • AMSOIL Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil
  • AMSOIL Premium Protection Synthetic Motor Oil

You’ll find the right fit, from long-hauler engines to VW TDI’s and truck motors like the GMC Duramax.

Open a business account to order AMSOIL

Commercial AccountWant to keep your company’s diesel engine repairs at bay? Fill your engines with the best synthetic engine oil on the market today. Open AMSOIL Commercial Account and get lubricants, cleaners, filters and other products delivered to you with rewards for bulk ordering.  Read more…

Order AMSOIL for your commercial vehicles and fleet service

AMSOIL Sold HereService customers love AMSOIL, so add it to your shelves. Offer your customers top-quality AMSOIL products for confident, worry-free servicing and discover bulk discounts. Read more…

Get started, independent service shop owners

SAE 15W40
Diesel and Marine Oil

Customer Review

diesel marine

Neutralizes acids and controls soot thickening

Series 3000
5W-30 HD Diesel

Customer Review

Diesel Engine 5W30

Stays fluid down to -47°C (-53°F)

Premium Protection
20W-50 Diesel

Customer Review

Diesel Engine 20W50
  • High-zinc formula
  • Ideal for flat-tappet cams

Premium Protection
10W-40 Diesel

Customer Review

Diesel Engine 10W40
  • High-zinc formula
  • Ideal for flat-tappet cams

AMSOIL Premium Protection synthetic motor oil is a unique combination of synthetic base oils and a superior additive package that exceeds the requirements of most gasoline or diesel applications that call for 10W-40 or 20W-50 motor oil. The Premium Protection line of synthetic motor oils are perfect for high-mileage vehicles and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off-road use. They  provide extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs.

  • High-zinc formula guards against wear
  • Ideal for flat-tappet cams
  • Resists deposits to help keep engines clean
  • Convenience of use for gas and diesel engines

Improves Fuel Economy & Maintains Low Emissions

Choose AMSOIL for your next diesel engine oil change

AMSOIL Synthetic oil is licensed by the American Petroleum Institute (API) to meet or exceed the requirements commonly found in your owner’s manuals. It has earning the additional “Resource Conserving” designation from the API fuel-economy testing. The AMSOIL brand is recommended for both older and modern emissions-control systems.

AMSOIL has proven to keep engines running like new longer.

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