• This site contains eBay affiliate links for which Sea-Doo Forum may be compensated.

who runs premium gas in their boat?

Status
Not open for further replies.
challenger18

challenger18

New Member
I have always ran premo in my boat, but with gas prices up about a buck from last year, i dont know if i will. What do you guys think?
 
Premium gas is only good if you need to run premium. Most seadoo's only need regular...87 octang. If you have a high compression engine than you need premium. If not, your just wasting the high octang fuel as the engine won't burn it and it is just blown out the exhaust.

Karl
 
The manual that came with my speedster 150 215hp SCIC said that 91 octane is recommended for optimum performance. Is this one of the engines you're referring to that need it Karl?
 
Yes, you have to run what it needed to keep it from Pinging. it requires 91 Octane as it needs it for the high performance engine it is. I believe all the supercharged engines need 91 octane.

Karl
 
Last edited by a moderator:
97 octane? wow - the highest I've ever seen at the pumps is 93. Is that a typo, or am I supposed to be looking for some "magic gas" somewhere? :)
 
Yea Superchargers need premium

My manual says i need to run premo. Gas here in So. Cali is going through the roof! We have the highest prices in the nation! I've been running running premo in my 07 tahoe 4x4 since i bought it ouch!(probably need to rethink premo in truck)There killing me in gas, I'm afraid what the prices will be by memorial day. :ack:
 
fat head

yeah, I'm always trying to type with my head :conehead:, so no wonder I hit the wrong keys - the cone helps, but not as precise as I need it!! lol
 
my gtx di 951 motor required 91, i always ran 89 becuase it was all that was sold at my marina. it doesnt really matter what u run
 
Yes, it does matter. Other wise it wouldn't matter what the octane was. If you use a lower octane it will cause detonation,(could cause a hole in the pistons) and you will have poor performance due to lack of octane. You can use higher octane but not less. The engine needs a specific minimum rating of octane.

Karl
 
kustomkarl said:
Yes, it does matter. Other wise it wouldn't matter what the octane was. If you use a lower octane it will cause detonation,(could cause a hole in the pistons) and you will have poor performance due to lack of octane. You can use higher octane but not less. The engine needs a specific minimum rating of octane.

Karl
Click to expand...

Just to clarify for others (I'm sure you know this Karl)- all things being equal, higher octane in itself will actually cause "worse" performance (whether anyone will notice or not is a different story)- however, it ALLOWS for more timing, compression, boost, etc. before detonation which will make more power. If you have a vehicle that is tuned to run optimally on 89 octane and you were to add 100 octane, it would actually be slower. I always get a kick out of people who run C16 race fuel in a stock vehicle and claim "man, this thing was fast as hell on that gas!" :).

The manual states "for optimum performance" 91 is recommended but says 89 can be used (IIRC, I'll have to look again tomorrow)- this makes me think that it is equipped with a knock sensor which will retard timing based on knock (detonation) and probably revert to a low timing map in cases of excessive knock. This is all speculation as I do not know how "high tech" the Seadoo PCM (ECM?) is. All my experience is with cars.

I do doubt that it would be tuned aggressively enough that running lower octane would blow it up- most manufacturers have a "window" tuned in to prevent such failures should someone use "cheap" gas, get a load of bad gas, etc.
 
the oil companies are so scrupulously honest that they would NEVER sell gas that is lower octane than the label on the pump says. btw. i hear the brooklyn bridge is up for sale again.
 
For 2 years I worked for a company in Kenilworth,N.J.,called "SAYBOLT". It is an independent gaging company that keeps the oil companies on there toes. They test samples for quality and quantity at the lab in Kenilworth and report back. The oil companies cannot put higher octane fuel in a lower tank or it will show the difference in the lab. The samples are pulled from the barge or ships before the product is pumped off and afterwords too from the shore tanks, to be sure it is the same product. SAYBOLT, is one of many that are independent to keep the standards to par, so we don't get riped off any more than we are now. The oil companies are a pretty tight run ship! They can afford to be with profits they make.

Karl
 
kustomkarl said:
For 2 years I worked for a company in Kenilworth,N.J.,called "SAYBOLT". It is an independent gaging company that keeps the oil companies on there toes. They test samples for quality and quantity at the lab in Kenilworth and report back. The oil companies cannot put higher octane fuel in a lower tank or it will show the difference in the lab. The samples are pulled from the barge or ships before the product is pumped off and afterwords too from the shore tanks, to be sure it is the same product. SAYBOLT, is one of many that are independent to keep the standards to par, so we don't get riped off any more than we are now. The oil companies are a pretty tight run ship! They can afford to be with profits they make.

Karl
Click to expand...

I have seen gas station owners pump from their "regular" tank into the "premium" tank... Pretty shady people out there!!
 
Well, all that takes is a camera and that would stop...that is kinda stupid as the tanks are in full view in the open. Funny how full tanks in the ground and the prices rise and that same product raises up in price too. My dad worked at ARCO as a terminal yards man, back in the 70's with all the fuel crisis going on...the terminals used to fill the closed gas stations with fuel till the price, and the demand went up, than pump it out and deliver it. They were claiming they had no gas ...all empty, till they got their price.
 
kustomkarl said:
Well, all that takes is a camera and that would stop...that is kinda stupid as the tanks are in full view in the open. Funny how full tanks in the ground and the prices rise and that same product raises up in price too. My dad worked at ARCO as a terminal yards man, back in the 70's with all the fuel crisis going on...the terminals used to fill the closed gas stations with fuel till the price, and the demand went up, than pump it out and deliver it. They were claiming they had no gas ...all empty, till they got their price.
Click to expand...

That always irked me too- gas that is already in the tanks that was bought for the "old" price going up daily... Always wondered how they got away with that.
 
Those Bastar**...lets boycott GAS!!!...uh.... as soon as I fill my speedsters tank..

Karl
 
I delivered gasoline, transmission fluid, oil, deisel, and bunker fuel. you might be suprised at what you get in your gasoline from time to time. and these exspress lubes that have bulk oil tanks you may also be suprised at what they may have in there tanks. you have to flush hose some where when you cary more than one product and some companies do not want to flush 10 or 20 gallons of oil down the drain. lol :cheers:
 
Last edited by a moderator:
Memorial Day

Can't wait to see those gas prices on memorial day.............yikes!!!

I think I'll take a break that weekend and not put extra money into some low life money sucking oil man's pockets!!........oops, let my emotions take control again, hold on........chugging........chugging.......chugging........ok, I'm better now. :cheers:
 
Status
Not open for further replies.

Similar threads

Seadoo Eric
RESTO Gas Smell
Replies
1
Views
159
Seadoo Eric
Seadoo Eric
E
Seadoo runs fine for 10-15 minutes and stops.
2
Replies
30
Views
610
Ezrajohn
E
B
Oil overload
Replies
3
Views
276
DRAGN3
DRAGN3
M
Trying to Get Jet Boat Running
Replies
0
Views
280
Mikemccready
M
9
2005 GTX 215 no power and runs rough
Replies
6
Views
419
Milehighguy303
M
Back
Top