what would be the premix ratio for my 04 seadoo gti le. can i use mercury 2 cycle oil for the mix? it says it is tc-w3 certified. went to local marine store asked for 2 cycle oil for a seadoo jet ski and he said 2 cycle oil is 2 cycle oil and gave me one from mercury could this be used? if this cant be used does anyone have a link for the right oil to use so i can order some.
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2004 seadoo GTI LE Premix ratio?
- Thread starter bebo_vi21
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Dr Honda
Well-Known Member
1) The guy at your local boat shop is an idiot. 2-stroke oils ARE NOT ALL THE SAME !!!!!!! Back in the day, people understood that. A TC-w3 oil will be a slow death to your engine. SeaDoo/Rotax engines need an API-TC oil.
2) We generally do not recommend going pre-mix here. Service the oil system, and let it do it's job. It's VERY reliable, and will keep the ski running better than on pre-mix.
2) We generally do not recommend going pre-mix here. Service the oil system, and let it do it's job. It's VERY reliable, and will keep the ski running better than on pre-mix.
Sure seems to be a host of "oil threads" pop up lately...
I'm no expert on ROTAX engines by far, but have played with motorcycle engines for years. Most, if not all, modern two-strokes had a variable-rate injection system that altered the fuel/oil ratio depending on rpm, etc. In other words, it might be...80:1 at idle and 40:1 at WOT. Hence, running a straight 40:1 pre-mix typically results in smoky operation and a tendency to foul plugs if much time is spent at idle.
Obviously the reason most people delete the oil pump and go pre-mix is due to a fear of the oiling system failing, which is extremely exaggerated, but does on occasion happen. (NOTE: Disclaimer again - not sure about ROTAX engine reliability in regards to the oil pump system, there are plenty of highly experienced members who know much more than me).
Mazda rotary engines, for example, inject oil onto the rotor faces during engine operation. It is possible for the system to fail and 'boom' goes an apex or side seal. So some owners pre-mix their fuel, which as one can imagine is a huge hassle for a car. Back in my dirtbike days, pre-mixing was popular amongst the racers but I never knew of anyone suffering an oil injection failure. Same with some outboard boat engines, though if my memory is correct some manufacturers actually draw the oil in with the fuel pump, so there is no chance of an oil-related engine failure, because if the "oil pump" fails, the fuel pump has failed, also and the engine doesn't run.
Dr. Honda obviously has an enormous amount of experience with these ROTAX engines.
I'd listen to him.
I'm no expert on ROTAX engines by far, but have played with motorcycle engines for years. Most, if not all, modern two-strokes had a variable-rate injection system that altered the fuel/oil ratio depending on rpm, etc. In other words, it might be...80:1 at idle and 40:1 at WOT. Hence, running a straight 40:1 pre-mix typically results in smoky operation and a tendency to foul plugs if much time is spent at idle.
Obviously the reason most people delete the oil pump and go pre-mix is due to a fear of the oiling system failing, which is extremely exaggerated, but does on occasion happen. (NOTE: Disclaimer again - not sure about ROTAX engine reliability in regards to the oil pump system, there are plenty of highly experienced members who know much more than me).
Mazda rotary engines, for example, inject oil onto the rotor faces during engine operation. It is possible for the system to fail and 'boom' goes an apex or side seal. So some owners pre-mix their fuel, which as one can imagine is a huge hassle for a car. Back in my dirtbike days, pre-mixing was popular amongst the racers but I never knew of anyone suffering an oil injection failure. Same with some outboard boat engines, though if my memory is correct some manufacturers actually draw the oil in with the fuel pump, so there is no chance of an oil-related engine failure, because if the "oil pump" fails, the fuel pump has failed, also and the engine doesn't run.
Dr. Honda obviously has an enormous amount of experience with these ROTAX engines.
I'd listen to him.
i felt the same way when he told me that DR. Honda. previous owner and mechanic of this pwc told me they converted and to make sure i premix the fuel. but i would like to get it how is suppose to be. how long is this process for repair? is it hard? do you have a step by step i could follow? and price range? i am mechanically inclined with vehicles and motorcycles but first on a pwc. thanx for your help you really reassured me ski has been sitting and not trying to ruin it before i even use it!!
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