Confuse & Worry

[tvnpe]

Hi All,

This is my first jet boat and I am confused and worry. I just purchased a 1998 sea-doo challenger 1800 with the two 110-hp rotax engines, the previous owner has been using Quicksilver Premium 2-cycle outboard oil that has the symbol (NMMA TC-W3 certified) on the bottle. Since the symbol said certified is this same as (NMMA TC-W3 outboard oil)?. I read in the challenger 1800 manual it stated that never use NMMA TC-W3 or ashless oil. Anyone on this forum have used this Quicksilver Premium 2-cycle outboard oil with the NMMA TC-W3 certified symbol on the bottle in your sea-doo jet boat please let me know. My main question is what should I do now since the previous owner been using this type of oil in the engines? thanks for your help.

Tuan

 

[SeadooBOB Square Pants]

Oil Oil every where....

If you read more on the bottle it should state that the oil exceeds the recommendations needed for Seadoos. I use quicksilver, I was using a different brand but this forum told me other wise. I had to drain the old oil, unless you know the only oil beinging used was quicksilver. I am sure other people on this forum might disagree but I don't know how much of it matters on a 96 speedster, or 98 in your case.

 

[texasmojo]

If you dont have a supercharger, then i think your safe.

 

[unclejay]

The old oil debate again

Sea Doo two stroke engines require LOW ASH not ASHLESS (NO ASH) oil. TCI-W3 is the wrong oil, drain it and switch to genuine Sea Doo 2-Stroke oil.

Probalby the only damage done is some clogging of the rotary valve and piston gunking which may go away. Depends on how many hours.