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Oil & Engine Additives

Which Diesel Anti-Gel Additive is Best? Power Service Diesel, Howes, Hot Shots, Stanadyne

Nov 2019/14 min/6 products tested

Watch the test ↗

The verdict

  1. 1

    Hot Shot's

    “Following the dosage instructions for each product, the Hot Shots Secret seemed to perform the best for preventing diesel fuel from gelling.”
    Buy on Amazon ↗
  2. 2

    Stanadyne

    “Hot Shot Secret did very good as well as Stanadyne. I would use both of those products for sure when it comes to providing that winter protection.”
    Buy on Amazon ↗

Other picks

  • Avoid

    Howes

    “Howes did worse than untreated diesel and I actually tested Howes twice hoping that maybe something happened with the test, but in both instances, untreated diesel did do better than Howes.”
    Buy ↗
  • Also noted

    Power Service Diesel 911

    “Also, PS 911 is corroding as well.”
    Buy ↗

Everything tested 6

Links go to Todd's own Amazon listings with his affiliate tag intact — this site adds nothing and takes nothing.