

Our #1 Howes pick
Top-ranked Diesel Treatment in our Howes lineup, scored independently on effectiveness, health, and environmental impact. No paid placements.
As an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure
Howes Lubricator (R.B. Howes & Co., Inc.) is a Wichita, Kansas-based manufacturer with roots going back to 1920, making it one of the oldest fuel additive brands in the United States. The company built its reputation around petroleum-based diesel fuel treatments, particularly the Diesel Treat anti-gel product, which became widely used in cold-climate fleet operations and by diesel truck owners across the upper Midwest and Canada.
The brand positions itself around an alcohol-free formula philosophy, distinguishing its products from competitors that use isopropyl alcohol as a water demulsifier. Howes argues that alcohol-based treatments can damage modern high-pressure common rail (HPCR) fuel systems and injector seals over time. Their product line also includes Diesel Defender (a year-round maintenance treatment), Diesel Lifeline (an emergency un-gel product), and Meaner Power Kleaner (a cetane booster), each addressing distinct diesel fuel system needs. SDS documentation is maintained on the brand's website at howesproducts.com/sds with regular updates.
Affiliate disclosure: CarCareTruth is reader-supported. As an Amazon Associate and affiliate partner, we earn from qualifying purchases when you buy through links on this page — at no extra cost to you. Affiliate revenue never influences our scores or rankings. Full disclosure
As an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure