Switching oil on an ETEC

[bayonnebandit]

Hey all,
I just recently purchased an 2004 90hp etec with 700 hours on it. It looks as though the previous owner has been using the XD 50 oil judging by the blue color of the oil in the tank. I want this engine to last as long as possible so, I was going to go to my local dealer and have the EMM switched into using the XD 100 oil. That being said what should I do about the existing oil in the tank? I called Bombardier and have gotten three different answers from three different techs ....... 1) You will want to drain and do a decarb on the engine 2) you will want to drain as much of the old oil out of the top of the tank and then just replace the rest with XD100 3) Just add XD 100 to the existing amount of oil. I don't want to mess anything up while simply trying to make the engine run better so please advise. Thanks in advance.

 

[wilde1j]

Re: Switching oil on an ETEC

I would use option #1 & 2 and wait until you have used the engine a few hours to get the XD100 to the oil pump, then have the tech make the EMM switch. Decarb is not a bad idea, and you won't have to do it again (one of the many XD100 benefits). BTW, I have a pair of E-Tec 175's running XD100.

Option #3 is just unacceptable, since you would be running a lean oil mix with a lot of XD50 ... not good.

 

[bayonnebandit]

Re: Switching oil on an ETEC

Hey thanks for the tip. Is there a simple way to decarb these engines? Would I be able to decarb the engine at home without having the diagnostic equipment? Is there anything about the ETECs I should know before I go out and zip around this weekend? Sorry, but I am new to the boating scene (especially these high tech engines) and have a lot of questions. Any help is much appreciated.

 

[wilde1j]

Re: Switching oil on an ETEC

If you can connect a temporary external fuel tank, get a couple of cans of Sea Foam (available from NAPA and other auto parts stores), put the contents in the fuel tank with about 2 gallons of fuel. DO NOT let the motor run the tank dry, under any circumstances. Run motor at idle until about 1 gallon is used (I know, a long time), wait one hour, then reconnect the regular fuel tank in the boat and take the boat for a ride at planning speeds for about 15 minutes. You may see some visible smoking for a while (just the carbon getting expelled). Repeat as required. Again, never let an E-Tec run the tank dry, or you will be visiting with the BRP tech soon after with bad starting problems, etc.

An alternative to Sea Foam is BRP Engine Tuner (same stuff, just most $'s).

When done, just dump the small fuel tank contents into your regular fuel tank.