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ShinerBock's avatar
ShinerBock
Explorer
Jul 17, 2019

Why Diesel Engines Lose Power & Efficiency Over Time

Interesting video from Jason Fenske at Engineering Explained on Exxon's new Synergy diesel fuel additive package, and their 2% mpg improvement claim. What I found more interesting was the 11% NOx improvement which means less DEF usage and/or more max power could be had without the need to de-fuel in order to stay within emissions.

BTW, even though he doesn't name of the third party test facility, it was Southwest Research here in San Antonio, Texas. I recognize the facility from when I worked at Cummins(we used them a lot) and confirmed it with a few friends that work there.

Enjoy!

Why Diesel Engines Lose Power & Efficiency Over Time
Tow Vehicles
  • ShinerBock's avatar
    ShinerBock
    Explorer
    Jul 19, 2019
    Learjet wrote:
    ACZL wrote:
    Loss of power and efficiently ??? My '16 Freightliner w/ a Detroit 13L 410 HP w/ 410,000 still pulls like a train


    ok, then it's settled...close all the labs :B


    lol! Yeah, that is real scientific.
  • Learjet's avatar
    Learjet
    Explorer
    Jul 19, 2019
    ACZL wrote:
    Loss of power and efficiently ??? My '16 Freightliner w/ a Detroit 13L 410 HP w/ 410,000 still pulls like a train


    ok, then it's settled...close all the labs :B
  • ACZL's avatar
    ACZL
    Explorer
    Jul 18, 2019
    Loss of power and efficiently ??? My '16 Freightliner w/ a Detroit 13L 410 HP w/ 410,000 still pulls like a train
  • ppine's avatar
    ppine
    Explorer II
    Jul 18, 2019
    My uncle was a diesel mechanic in Alaska for decades. He helped pioneer the oil analysis technology for Standard Oil.

    He always told me to get the air in and get the air out. Then get rid of the dirt. I have actually had good luck with engine additives designed to reduce friction.
  • mkirsch's avatar
    mkirsch
    Nomad II
    Jul 18, 2019
    Why diesel engines lose power & efficiency over time?

    How about normal wear and tear and lack of maintenance?
  • FishOnOne's avatar
    FishOnOne
    Nomad
    Jul 18, 2019
    I've been running this ExxonMobil DieselEfficient fuel for ~7 months now and it clearly reduced the regen frequency on my truck.
  • kw_00's avatar
    kw_00
    Explorer
    Jul 18, 2019
    I watch his videos when I can, and have been impressed with them. Thanks for posting.
  • Sam_Spade's avatar
    Sam_Spade
    Explorer
    Jul 18, 2019
    ALL piston engines lose power and efficiency over time......if the time is long enough.

    It is because of wear; piston rings and loss of compression mostly.

    You can't really fix that with snake oil.

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