95 speetster fuel octane and oil type

[Sink]

OK... Newb here to jet boating. In the manual, it says I can use 87 octane fuel but the PO of the boat says I should use 91. What do you all think? This isn't the highest performance engine or anything. I fill up on the way to the lake so loss of octane isn't as much of a problem. Also, how about the oil? Does it need the Sea doo high dollar oil or can I just get low ash API TC injection oil from "Wally World"? I know this is opinion but am I going to hurt anything?

I tried the search field but for some reason it is bringing up EVERYTHING instead of just what I am looking for. Any tips on the search? I'm sure this has been discussed before and you are all getting tired of seeing these same questions so sorry, but I did try. Not new to forum land.

Sink (my nickname, not something I want my boat to do...)

 

[parrothd]

87 is fine, however you want to buy gas without ethonal, with is usually only 91-93..

 

[brock1]

87 is fine, however you want to buy gas without ethonal, with is usually only 91-93..

i run premium in all my toys my thinking is that an extra 80cents or so is worth it when it come to performance and the longevity of the watercraft ill always spend a little more to reassure myself that everything is in working condition and is running at top notch. as for the oil i NEVER EVER EVER EVER run anything other than seadoo brand API-TC low ash two stroke oil in mine. The oil is the life of the engine and skimping on it and saving an extra 5 bucks could end up costing you 500 for a rebuild after junk oil seizes your engine. BUT...... thats just an opinion everyone is diff. but you no where i stand

 

[Gamerse]

http://www.seadooforum.com/showthread.php?28478-QuickSilver-oils...&highlight=quicksilver
^ cheap oil, available at walmart, some swear by it, no-one has came out and said they hated it.
Can't go wrong with seadoo mineral as stated by brock1, just make sure it is not TCW3 outboard type.
Higher octane is cheap insurance against detonation, and with a 150psi per cylinder, why not. I will also agree with the NO ETHANOL statement.

Not sure how they do things in your state, but in TN it is illegal to advertise no ethanol and sell any ethanol blend under that sign. Violators are subject to a $1,000 dollar fine per pump (thats each nozzle) if so much as 0.1% is found in the fuel. So any station that says no-ethonal should be ethanol free at any grade at any pump. (again, not sure if it is enforced like that where you are)
Ethanol not only carries water, but destroys many older seals and hoses that were not designed to ever come in contact with it.

Usually the states have some sort of agency sticker on the gas pumps that certifies their accuracy. You can call that agency and ask how you can avoid ethanol.

:cheers:
Ernest.

 

[brock1]

http://www.seadooforum.com/showthread.php?28478-QuickSilver-oils...&highlight=quicksilver
^ cheap oil, available at walmart, some swear by it, no-one has came out and said they hated it.
Can't go wrong with seadoo mineral as stated by brock1, just make sure it is not TCW3 outboard type.
Higher octane is cheap insurance against detonation, and with a 150psi per cylinder, why not. I will also agree with the NO ETHANOL statement.

Not sure how they do things in your state, but in TN it is illegal to advertise no ethanol and sell any ethanol blend under that sign. Violators are subject to a $1,000 dollar fine per pump (thats each nozzle) if so much as 0.1% is found in the fuel. So any station that says no-ethonal should be ethanol free at any grade at any pump. (again, not sure if it is enforced like that where you are)
Ethanol not only carries water, but destroys many older seals and hoses that were not designed to ever come in contact with it.

Usually the states have some sort of agency sticker on the gas pumps that certifies their accuracy. You can call that agency and ask how you can avoid ethanol.

:cheers:
Ernest.

No mineral only full synthetic oil

 

[DonoBBD]

I like to read the spark plugs before I spend the money on higher octane. As a petro chemical engineer I know that if your car, truck, or boat has no knock sensor then your wasting your money on higher octane. IF you have an O2 sensor you may run optimum only in closed loop.

Higher octane will make your plugs read rich. If you look deep into the plug where the ceramic meets the outer threaded ring you can see peppering on the ceramic then you have detonation. Your exhaust top side of the piston will look like it is sand blasted on the ring lands. With out seeing this you are totally wasting your money on higher octane fuel.

Octane = "Oct" prefix means 8 like the octopus. "ane" means one covalent bond. This means the octane molecule has 8 carbon atom sharing one electron in an octagon shape. Carbon has 6 electrons and 6 protons 8 electrons is stable the 8 carbon atoms each share one and there is one needed for each carbon that is filled with one hydrogen for each carbon. This makes octane a very large atom and needs more heat to start to burn. This then resists detonation under high pressure and heat.

If any government wanted to truly make a difference in smog they would never allow high octane to be sold at the pumps. With out the heat or more timing advance (creating more heat) the high octane gos out the tail pipe and after burned in the cat.

About the oil well if your good at maintaining the power valves then run any oil. If you do not want to clean them run the low ash oil to keep them clean. I run the low ash and clean the valves once every three years or so. That is me. I have run mineral oil till the power valves do not work. Motor will not rev much past 4500 then clean them. No worries less work spend the money on low ash oil. Any low ash oil will work they are all about the same.

Cheers Don.

 

[Sink]

Awesome replies!!!! We have regular and ethanol pumps in Nebraska so I will make sure I'm running regular in it. I think I will try the regular 87 and see how it runs and make my decision from there. Oil will always be low ash API TC. I'll check around for brands.

I also found a different way to search not using the search up top to the left. That search brings up nothing! The more advanced search helped.

This seems like a great bunch of jet boaters and I thank you for the help!

Going boating,
Sink.... or float?

 

[RFoster130]

No mineral only full synthetic oil

Not quite correct. His engines do not have RAVE valves. full synthetic isnt really required. He can use a mineral/synthetic blend. The best bargain would be the Quicksilver PWC synthetic blend.

 

[Sink]

Not quite correct. His engines do not have RAVE valves. full synthetic isnt really required. He can use a mineral/synthetic blend. The best bargain would be the Quicksilver PWC synthetic blend.

That's what I was looking at at Wally World. Any better values that would be the same thing or is that about where I should stop looking for a bargain??? Why is that stuff so expensive? I feel like I'm buying printer ink! GEESH! Any group buys being put together for things like this??? I'm on a motorcycle forum that does group buys with nice discounts for specific items and has a separate section in the forum for things like this.

Thanks again for your help!
Sink

 

[RFoster130]

yeah Wally World is where I find it. Just make sure it is the one that says PWC on it. The blend is a silver jug. There are a couple others brands if you can find them that are a bit cheaper. Mystik JT4 is one of them. It is hard to find many of the off brands. That is why I choose Quicksilver. It is available at wal mart by me. At least you can save a few bucks with the blend, the full synthetic is 39 a gallon.