FUEL ADDITIVES?????

[mick]

CAN SOMEONE TELL ME WETHER PUTTING OCTANE BOOSTERS OR GUM AND TAR REMOVERS INTO MY FUEL, WILL DO ANY DAMAGE TO MY OUTBOARD. I AM A BIG FAN OF THESE ADDITIVES IN CARS. BUT I DONT KNOW SQUAT ABOUT OUTBOARDS.

FISH ON

[The_Walrus]

I've always used a fuel supplement in all things mechanical.

This includes my 25/4 Yammi from the first time I started it.

Luc

[adrian]

hi guys
are we talking about products like spitfire or similar things . I too would like some info on what you can add

anzac

[Lucky_Phill]

What is the point of the additive ? These additives' for cars tend to be used for cleaning injectors, top end, and boost performance. They do not get better fuel economy ( noticeable anyway ).

The only thing that happens to a 2 stroke is a " varnishing " effect in the carbies. This can be solved with a good clean out.

I would contact your Motor Manufacturer for more details before trying these things.

Maybe a four stroke engine is different to the 2 banger. ???

[Kerry]

Simple rule, don't use automotive additives in outboards.

Cheers, Kerry.

[Fitzy]

Hi Kerry,
What about 4 strokes? Arent some of them basically car engines?

fitz

[fisho]

I don't add fuel additives as such however I have always followed my marine mechanic's advice of using high grade petroleum (eg optimax) in my motor (a 2 stroke) - he claims you will receive cleaner running and better fuel economy - I have followed this advice for years and have no reason to disagree with him.

[Kerry]

Fitzy, 4S's might be a possibility but until there's some confirmed results I reckon I'd prefer someone else's motor to be the guinea pig first. Certainly heard of some of the new dfi's/efi's not liking some of this stuff at all (real bad news).

Fisho, I'll disagree with him especially running PULP type fuels in low compression motors, which many of the 2S outboards are. Different octane fuels have different burn times so without modifications to the engine the fuel can still be igniting and exhausting at once, which isn't good.

Cheers, Kerry.

[Fitzy]

I don't add fuel additives as such however I have always followed my marine mechanic's advice of using high grade petroleum (eg optimax) in my motor (a 2 stroke) - he claims you will receive cleaner running and better fuel economy - I have followed this advice for years and have no reason to disagree with him.

Hi Fisho,
One of the top Yammy mechanics in oz told me to ALWAYS run super in ALL 2 strokes. Recons they run better on it. They HAVE to reccomend ULP becasue that's what the law says. I got a 97 Merc 2 stroke that has only been run on super (or LRP) since brand new & I aint had a problem yet.
There's also some nasties in ULP that are normally run thu a catalitic converter in cars. However boats, whipper snippers, chainsaws etc don't have catalytic converters & your breathing them nasties that are worse than lead (Benzene?) straight into your system.

Fact or fiction? Truth or myth? Food for thought.

Waddyas reckon?

Fitzy..

[Lucky_Phill]

That's strange Fitzy, Steve told me you run your Merc on Bundy Rum ???

I do believe you are right about running LRP. We do tend to breath a lot of fumes from the outboard moreso than stuff out the arse end of the car.

I think a lot more info is needed here. Good topic Mick

[Fitzy]

That's strange Fitzy, Steve told me you run your Merc on Bundy Rum ???

I do believe you are right about running LRP. We do tend to breath a lot of fumes from the outboard moreso than stuff out the arse end of the car.

I think a lot more info is needed here. Good topic Mick

Hi Phil,
Never that rum stuff. Aint touched it since I was 16. Possibly a drop or 2 of Dimple if anything. 8)

Best leave it at that, family site & all.

Fitzy..

[Kerry]

Catalitic converters now there's a real nasty piece of work , especially before they get hot, and they have to get hot, otherwise they don't work, but then if the right amount of material went into them in the first place to really made them work right they'd be worth a fortune and nobody except nobody would be able to afford them.

Anyway California in all it's "future plans" have declared that all inboard boat engines (the rest will follow I'm sure ) will require converters by about 2005 (I think). Now apart from the fact that there isn't a catalitic converter invented yet that can handle water cooled exhausts, I suppose there's currently an opening for a good inventor.

Cheers, Kerry.

[Katrina]

Russ says - regarding the use of Optimax type fuels in 2 stroke outboard motors. The recommended octane number of this fuel is slightly higher than LRP. After consulting with BP (I know optimax is a shell fuel! Wanted the opposition's point of view) I found that this fuel is a cleaner burning more reliable fuel than LRP, and also assists in the removal of carbon deposits from 2 stroke outboards. Care should be taken, however, not to constantly run "Optimax" through your system as it does clean out the engine, you only need to use it one in every 4 tanks to obtain the benefit of this fuel. Constant use of this fuel (Optimax), can create unnecessary wear to sleeves and rings. If used in the correct manner it will clean your fuel system, and promote prolonged outboard life. Please take note of the pamphlet available at Shell service stations, but disregard the every second tank theory, and drop it to one in every four. Further info can be obtained at BP fuel technology listed in the white pages. Rusty

[Kerry]

Also now that BP has announced this ethanol trial in the SE (and probable expansion throughout the state) I believe somebody (like BP) needs to come out with some hard convincing facts/data that this concoction will not be harmful > to 2S's.

Many comments out of the U.S where this type of stuff has been available doesn't give a real good picture as far as 2S's are concerned.


Cheers, Kerry.

[Luke]

Theres a bit on the do's and don'ts on additives on this site
www.maxrules.com
cheers Luke