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Posts: 35
Reply with quote  #1 
Can OMC “Carbon Guard” be used in the fuel for a 2007 E150DHLSUF E-Tec gen 1 150 HO? See pic

2007 E150DHLSUF 150HO G1

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Posts: 4,087
Reply with quote  #2 


  • Carbon Guard is a gasoline additive formulated to minimize deposit buildup in 2-cycle and 4-cycle marine engines when used as directed
  • Carbon guard will provide:
    • 1. Reduced possibility of piston ring sticking
    • 2. Reduced carbon build up on 4-cycle valves
    • 3. Better overall engine performance
    • 4. Increased engine life
  • Mix Ratio:
    • 2-cycle Engines - Add 1 oz. of Carbon Guard for every 8 gallons of gasoline
    • 4-cycle Engines - Add 1 oz of Carbon Guard for every 16 gallons of gasoline

Note: Engine with an excess of 100 hrs of operation and not previously treated with Carbon Guard should be treated with Evinrude Johnson Engine Tuner before beginning us of Carbon Guard.


Posts: 35
Reply with quote  #3 
Thanks Steelhead. Bought off flea bay and went to use it and noticed it smelled like gas, the safety seal wasn’t sealed, and it’s old OMC stock. Guess I got had. Going to get some locally and notch it up to lessen learned.
2007 E150DHLSUF 150HO G1

Posts: 18
Reply with quote  #4 
Stelhead, why do you have to deal whith Evinrude Engine Turner before? I have my engine with 400 hours an I would like to put Carbon Guard but I don´t know how to proceed to put the Engine Turner.
I allways use XD100 but I never used Carbon Guard. The engine works very well, I don't know if it is necessary to do all this.
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