Seafoam in new 4-stroke

[fullerton]

Hey guys -<br /><br />I have a '04 75hp 4-stroke Yammy. I just got done breaking it in and am planning start using seafoam in the gas and also in the crank (a couple running hours before I change the oil).<br /><br />Anything that I should make sure I AVOID doing that might cause me problems?<br /><br />I've been running seafoam in my '97 blazer with great sucess, but didn't start doing that til about two years ago.<br /><br />Let me know.

 

[gss036]

Re: Seafoam in new 4-stroke

I don't know about useing it in your oil.I have a can on the shelf, I will have to read it. I see no problem with using in the gas as it a good additive to keep things cleaned. I have heard of some mechanics putting a qt of diesel fuel in engine oil and running just long enough to warm it up good and then drain oil, supposedly helps get any sludge out. I think with quality of todays oils, that is probably not as much a problem as in the past.<br />I have used Mystery oil from time to time, even in the gas for my Merc 200HP carbed engine. I have a 115 gal fuel tank and will add a quart to it when filling up.

 

[roscoe]

Re: Seafoam in new 4-stroke

Sounds like a good plan to me.<br />THe SeaFoam is also a good gas stabilizer, in case you can't use the boat for an extended period.<br /><br />You probably won't need to put it in the crankcase for very long (15 min?) as you are starting with a clean engine, and are doing the right thing to keep it that way.