Outboard fuel
Submitted by Rodrat on Tue, 2020-11-10 15:33
Not sure if this is a stupid question or not lol
Do you guys just use standard unleaded for your 4 stroke or Premium?
Cheers 
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FISH FOR THE FUTURE 
little johnny
Posts: 5359
Date Joined: 04/12/11
Pretty sure there designed
For the lower octane . I still use high one every 6 tanks .
eziliving
Posts: 875
Date Joined: 30/12/09
just been reading up as im
just been reading up as im on the hunt for a new motor and this is straight from the mercury site as i was just looking at the specs;
Suzuki site
minimum 91 (RON) octaneGet busy living, or get busy dying!
aaasnapper
Posts: 218
Date Joined: 15/01/10
Premium
We use premium as advised by our Marine Mech:-
1. Stores for longer than regular as the manufactures account for it not being sold as quick as regular in their own storage tanks
2. Cleaner burn better for the engine/injectors
3. For the added 10c/litre it works out at $10 over 100L
If you are using quite a bit of fuel regularly than maybe as Johny suggest and other tank or so as you see fit.
null
Rodrat
Posts: 1672
Date Joined: 13/01/07
Fuel
I'm happy to put premium in every time, just wondering if it ok to do.
I have 2002 140HP Johnson outboard.
Cheers
FISH FOR THE FUTURE
Marineboy
Posts: 842
Date Joined: 14/03/14
Fuel
probably better to consult the manufacturers recomendations on this.
My spots are so secret even the fish don't know about them !
SeperateKnob
Posts: 668
Date Joined: 28/11/16
Regular unleaded is perfectly
Regular unleaded is perfectly fine
scano
Posts: 1247
Date Joined: 31/05/07
I would suggest
Just run regular unleaded 91 Ron, and add some F10 fuel additive every so often.
thise df140's are a very reliable motor. Corrosion is their biggest enemy. Lookup gold bolt dd140 on google and you will find plenty of info. They are otherwise a great motor.
little johnny
Posts: 5359
Date Joined: 04/12/11
You actually
Get far bit more ks out of higher octane less water ect . I’m up to nearly 3000 hrs on mine ,never used injector cleaner . I only use Caltex or Bp fuel ( both Come from same place, BP ) exactly the same . 2 bangers love higher octane . The only reason I run higher octane every now and again is to prevent using ejector cleaner . Iam no mechanic but if you use higher octane on 4 strokes all the time will it burn valves out quicker ? Only what I was told . Buggered if I know .