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Two New AMSOIL CJ-4 Diesel Oils with Extended Drain Intervals

Note: This entry represents a post originally published on Technilube.com. The original article content was not available in the archived copy currently being restored. If the original material is recovered, this entry will be updated.

Well, one isn’t new, but it has been reformulated.  For a few years now Amsoil has had their Premium API CJ-4 Synthetic 5W-40 Diesel Oil (DEO) to address the newer diesel engines meeting the emissions required since 2007.  Now added to this line of oils comes Amsoil’s Premium API CJ-4 Synthetic 15W-40 Diesel Oil (DME).  […]

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Comparison of the former and new Technilube.com homepages
Welcome to the New Technilube.com Blog and Site!

If you found this post, you have discovered the Technilube.com blog on the new site. Welcome.

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Facts & Info
Oils Against Oils
Oils Against Oils
Originally published in Fast Fours & Rotaries in July 1998, “Oils Against Oils” reports a performance-car engine test comparing synthetic ...
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9th Annual Skoolie Swarm
9th Annual Skoolie Swarm
February 25-26, 2026 (event dates February 20th–March 2) | Melrose, Florida ...
Heritage Spotlight
My First Cars and AMSOIL
My First Cars and AMSOIL
1981 Mercury Capri 

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