Outboard fuel mix.

You don't tell us its year of manufacture but This site should be able to tell you if you don't know it.

In the mean time I suggest that you use 50:1 using a two-stroke outboard oil to TCW3 specification. (I take it it is a two stroke!) It is unlikely to be any oilier than that and if it happens to be 100:1 then you'd be better off using 50:1 probably unless you find any problems such as oiling of the plug

You might like to read This item from the iBoats forums on Fuel:oil mixtures

Generally the iBoats forums are an excellent source of help and advice on outboards.
 
[ QUOTE ]
.....
You might like to read This item from the iBoats forums on Fuel:oil mixtures

Generally the iBoats forums are an excellent source of help and advice on outboards.

[/ QUOTE ]

A very succinct article - I'll keep it for reference. I note the comment about his racing mercs at 20:1. Perhaps that's why late Seagulls should be run at that mixture. /forums/images/graemlins/laugh.gif
 
[ QUOTE ]
maybe I should try 75:1?

[/ QUOTE ] I'd rather stick to 50:1 in case that is the correct mixture. It wont do any harm if it should be 100:1 but running on 75:1 instead of 50:1 might. Just the rider that if it does not run properly or if it oils the plug then reduce the oil.
 
[ QUOTE ]
Simple one - what's the fuel mix for a 2.5hp Suzuki please?

(no - I haven't got a handbook before you suggest it! /forums/images/graemlins/grin.gif)

[/ QUOTE ]

I have a 3 year old Suzuki 2.2 for which the handbook specifies either Suzuki CCI or else a NMMA certified TC-W3 oil at 100:1 except for commercial use and also, curiously, in South Africa where you should use 50:1. Personally I use 50:1.
 
Careful now - the suzuki 2hp and 2.2hp engines are two strokes. But the 2.5hp, which has been around for a couple of years is a four stroke. I wouldn't advise mixing in oil in the fuel on that one!
 
[ QUOTE ]
But the 2.5hp, which has been around for a couple of years is a four stroke.

[/ QUOTE ] Not knowing was the reason for my comment " (I take it it is a two stroke!)" in my first reply!
 
Apologies - missed that one. It just seemed like everyone was quoting oil mixes, when I wasn't aware that Suzuki had evr produced a two stroke 2.5hp.
 
If a 2 stroke, use 50:1.. all the time.. there is certification on various tohatsus and mercs etc for 100:1 for 'leisure' use.. bollox to that.. keep it at 50 , it will outlive you normally..

Leisure use means stuff it if it packs up....

Bit o smoke is fine.. I run both the yam 2b and the tohatsu 18 on 50:1... always will do...

Joe
 
[ QUOTE ]
100:1 for 'leisure' use.. bollox to that.. keep it at 50

[/ QUOTE ] Well yes that was realy what I was saying but in more gentlemanly terms!

I run an Evinrude that was produced at about the time OMC had a brief flirtation with the idea of running at 100:1. The manual says 100:1 but the tank was marked 50:1 IIRC. It was later recommended that they should all run on 50:1
 
I use 50:1 but always use good o/b oil, it makes a difference, imho., i.e. lawnmowers etc run hotter and burn off the carbons.
 
You must log in or register to reply here.

Other threads that may be of interest

Gixer
Suzuki DF2.5 fuel tank cap problem
Replies
19
Views
332
Graham376
Graham376
A
Vintage Yamaha 661 air-cooled outboard issue
2
Replies
23
Views
378
Andrewclark
A
T
Diesel fuel stabiliser.
2
Replies
25
Views
916
Dellquay13
Dellquay13

Share this page

Top