[THEFERMANATOR]

All of your EVINRUDE dealers will have the XD50 and XD100, and most of them have it in bulk for ALOT better price. You could also use MERCURY DFI oil available from most any marine outlet store. The DFI oil has the carbon inhibitor additives needed to prevent the oil from turning into a black sticky tarry mess inside your engine. In an old school 2 stroker, the oil is carried through with the gas. This provides 2 functions, it thins the oil down so it will coat everything and the gas actually will help to clear the old oil out of the crankcase. In a DFI the oil goes in by itself with nothing else to help carry it, so the oil is formulated to act differently when it is injected. Secondly DFI oil has carbon inhibotors in it to prevent the oil from turning to a black hard sticky mess inside your crankcase. And just like your fuel system can get gummed up from sitting and plug up, so can your oiling system. This is the second part that the carbon inhibitors takes care of, it helps to keep the system clean and flowing properly.

MOST of the early FICHT failures have been traced back to the oil that was used, and the spark plug indexing not being done correctly. As for the De-carb, I would go with the 2 part method on a DFI. First get a can of the SEA-FOAM that you ad to fuel and put that in a seperate can of gas with 3 gallons of gas in it. This will be the mixture that you will run through your fuel system from a seperate tank. And also since you have a DFI that has been run on regular oil, I would also get a spray can of the SEA-FOAM deep creep. On the FICHT engine I believe you'll have to remove the airbox to expose the throttle bodies to do this.

Start off by switching over to the 3 gallons of SEA-FOAM and gas mixture on a seperate tank. Then you'll start the engine with the airbox off and the throttle bodies exposed. While it is running you'll spray the SEA-FOAM DEEP CREEP down into the throttle bodies. I wouldn't do this but for about 30-45 seconds and then stop spraying it and shut it off and let it sit for 15 minutes. Then start it back up and repeat the process. If your carboned real heavy I would repeat this process one more time. This should clear her right out though. The SEA-FOAM is some GOOD stuff, and is alot cheaper than the factories stuff.