Outboard fuel

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's picture

Posts: 4294

Date Joined: 04/12/11

Pretty sure there designed

Tue, 2020-11-10 15:54

For the lower octane . I still use high one every 6 tanks .

Posts: 730

Date Joined: 30/12/09

 just been reading up as im

Tue, 2020-11-10 16:58

 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;

 

  • Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

Suzuki site 

 

minimum 91 (RON) octane

 

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 Get busy living, or get busy dying!

Posts: 213

Date Joined: 15/01/10

Premium

Tue, 2020-11-10 17:06

 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.

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Rodrat's picture

Posts: 1672

Date Joined: 13/01/07

Fuel

Tue, 2020-11-10 17:18

 I'm happy to put premium in every time, just wondering if it ok to do.

I have 2002 140HP Johnson outboard.

Cheers

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FISH FOR THE FUTURE

Marineboy's picture

Posts: 729

Date Joined: 14/03/14

Fuel

Wed, 2020-11-11 09:26

probably better to consult the manufacturers recomendations on this.  

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 My spots are so secret even the fish don't know about them !

Posts: 539

Date Joined: 28/11/16

Regular unleaded is perfectly

Tue, 2020-11-10 18:35

Regular unleaded is perfectly fine  

scano's picture

Posts: 1210

Date Joined: 31/05/07

I would suggest

Tue, 2020-11-10 19:31

 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. 

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little johnny's picture

Posts: 4294

Date Joined: 04/12/11

You actually

Tue, 2020-11-10 20:44

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 .