2004 Direct Injection 175hp

[optaylor823]

Ok I just bought a boat with a 2004 175hp Evinrude that is Direct Injection. I have had a 4-stroke Yamaha for 3 years, so I have been out of the loop as far as 2-stroke oil. I had a buddy tell me with that size motor I had to run a special 2-stroke oil. I looked at the manual and all I could find is that it had to be TCW-3. I was wondering if anyone knew what type 2-stroke oil I should run in this motor. Also has anyone had problems with the mixing unit. I do not want the motor to blow because the oil was not mixed. If I have to I will take the mixer off and mix it myself.

[SEAHORSE]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by optaylor823 &raquo;</TD></TR><TR><TD CLASS="quote">I have had a 4-stroke Yamaha for 3 years, so I have been out of the loop as far as 2-stroke oil. I had a buddy tell me with that size motor I had to run a special 2-stroke oil.

I do not want the motor to blow because the oil was not mixed. If I have to I will take the mixer off and mix it myself. </TD></TR></TABLE>

First of all, you cannot take the oil system off and premix the fuel on a direct injected motor like your FICHT. It would be like trying to take the oil pump off your car and premixing the gas. Loud sounds from the internals would soon be heard.

DFI motors (all makes) have higher internal temperatures, sooting, and carbon buildup which makes the use of a specialized lubricant a recommended practice. Evinrude has their XD-50 oil which was designed for your motor. Yep, your motor will run on a generic TC-W3 oil but you will be plauged with carbon, short plug life, etc. over the long run.

Remember that TC-W3 in a traditional 2 stoke goes right thru the motor and gets burned up. At 6000 rpm, it only has to "work" for 1/100th of a second. In a DFI motor, much less oil is used and it is recirculated, spending more time inside the motor, getting hotter, and having to do its job of making things slippery.

[optaylor823]

I appreciate the information. Also as far as the carbon build up should I be running something like sea foam to help keep the carbon from building up? Is there anything else I should know about this motor to help it last longer. What are most of the guys running in the gas if anything at all?