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Old 13 September 2016, 11:34   #1
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using TCW in petrol for etec

I am wondering if using tcw3 in the petrol of an etec say 100:1 along with the XD 100 in the tank would help injector/ engine life? Does anyone here do it? Thoughs and observations please

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Old 13 September 2016, 11:39   #2
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I thought XD100 is fully synthetic and cannot be mixed with normal TCW3. If you run XD50 that is compatible. Instead of putting TCW3 in the tank why not just use Evinrude carbon guard?
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Old 13 September 2016, 11:45   #3
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Quote:
Originally Posted by two stroke mick View Post
I am wondering if using tcw3 in the petrol of an etec say 100:1 along with the XD 100 in the tank would help injector/ engine life? Does anyone here do it? Thoughs and observations please



TSM

I was advised to add an egg cup full of oil to 20l of fuel. Use the same oil as you use in the engine. The extra lubricity helped the injectors. It's the ethanol in the petrol that "dries" the fuel.


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Old 13 September 2016, 12:48   #4
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I believe with the ETEC, the crank bearings are divorced completely from the combustion chamber?

Oil is direct injected on the bearings, not in to the combustion stream.

If you add oil, it will never make it back to the bearings, because the system isn't designed to work that way...it'll just blow out the exhaust.

Don't quote me on this though, I'm not an expert on ETECs.
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Old 13 September 2016, 12:55   #5
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Why not use "Johnson Evinrude 2 + 4 Fuel Conditioner"

Or why not to follow conclusion from EvinrudeNation:

Quote:
If you are using XD-100 oil, you do not need any type of decarbonizing additive.
I do have a lot 2+4 but always forgot to use it. I think I usually start to use it before winter ...
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Old 13 September 2016, 13:25   #6
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using TCW in petrol for etec

It's not about decarbonising or lubing the crank. It's to lubricate the injectors. The Etec injectors use a voice coil system & operate at a high frequency. They use the fuel passing through them to cool the coils. Modern ethanol fuels are "dry" & the lack of lubricity in the fuel can cause the injectors to overheat. Adding a splash of oil helps to combat this.
A splash of 2 stroke wouldn't hurt any modern DI engine, even 4strokes IMHO. The problem will get worse as the ethanol content of fuel increases.

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Old 13 September 2016, 13:45   #7
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I'm not PHD at chemistry or engines. My favorite motto is "I know that know nothing" or something like that.
I can not buy in Poland petrol not having any new cosmic formula improving fuel consumption, cleaning engine, doing some more. It is really impossible to buy "nromal pure petrol". How can I know if I add something more to petrol not cause some reaction or reverse results ... Maybe adding XD100 directly to petrol is not bad idea at all or maybe it be too much.
But I understand that for winterization 2+4 conditioner be better than adding oil to tank ?
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Old 15 September 2016, 14:23   #8
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Old 19 September 2016, 15:53   #9
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E-tec made in the US, few countries with more added ethanol then the US. If they do not have any problems with the fuel, then why worry.
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Old 20 September 2016, 01:47   #10
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Johnson Evinrude 2 + 4 Fuel Conditioner? Can't understand the logic in that as it appears to be made with ethanol? Most modern fuels have cleaning agents added to them already, i believe it is the water content in your fuel tank that causes potential injector problems especially if the engine is not used regularly. Good water separator/fuel filter would surely be better?
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