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JoelKlein


I wonder how a 2021 snow blower will look like...

Joined: Sep 26, 2011
Points: 74

While I wait for the snow, what about the fuel?
Original Message   Dec 25, 2011 9:50 am
Happy holidays every one! ... bought the toro 1028 OXE back in October, right after the very first early snow storm. Was not able to try it in snow... I added the startron stabilizer And filled up the tank with 93 octane. I tested the new baby, showed off without spinning augers... But now it's a long time unused. My question is: is it okay for the fuel to sit in the carb for such a long time? Thanks!
This message was modified Dec 25, 2011 by JoelKlein


Toro 1028 OXE
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JoelKlein


I wonder how a 2021 snow blower will look like...

Joined: Sep 26, 2011
Points: 74

Re: While I wait for the snow, what about the fuel?
Reply #6   Dec 25, 2011 5:01 pm
I use 93 for my Toyota sequoia, whice improves power majorly in low rpm, so I can cruise on 60 mph with only 1500 rpm... Instead of 1900 rpm.. So when I filled up my truck, I filled the B&S 2.5G gas container

Toro 1028 OXE
borat


Joined: Nov 10, 2007
Points: 2692

Re: While I wait for the snow, what about the fuel?
Reply #7   Dec 25, 2011 5:45 pm
JoelKlein wrote:
I use 93 for my Toyota sequoia, whice improves power majorly in low rpm, so I can cruise on 60 mph with only 1500 rpm... Instead of 1900 rpm.. So when I filled up my truck, I filled the B&S 2.5G gas container

Help me out here.....

How does the octane rating of the fuel have such an effect on the gear ratio?   Constant engine rpm in a particular gear should, in most cases, deliver the constant speed.  If you're in fourth gear at 1500 rpm and increase the engine speed to 1900 rpm in the same gear, you will increase the speed of the vehicle unless you're spinning the drive wheels.  Lowering the engine speed in the same gear will result in slower speed. 

There's something in what you've said that I'm either missing or not understanding. 
fleetfoot


Joined: Jan 23, 2011
Points: 19

Re: While I wait for the snow, what about the fuel?
Reply #8   Dec 25, 2011 6:28 pm
I worked in the petroleum industry. The energy in a gallon of gasoline is independent of octane value. A gallon of 87 octane has the same energy content as a gallon of 93 octane. Higher octane gasoline has a higher ignition temperature which is beneficial to high compression ratio engines. OPE engines are low compression ratio engines along with the majority of automobile engines. If a low compression ratio engine needs high octane gasoline it typically means it is not functioning as originally designed.
mobiledynamics


Joined: Oct 1, 2011
Points: 81

Re: While I wait for the snow, what about the fuel?
Reply #9   Dec 25, 2011 9:35 pm
Fleetfoot -

OT, but where do you fill up. At the cheapest pump in town or just a decent station that has *good traffic* -- which in theory should = gas that moves in qty and is more fresh. Which might mean better pumps, better maint, filters, etc.

Gas is gas  afaik. Meaning it all comes out of the local pipeline/refinery. How much additive pack differs from brand X versus X when oftentime, it will be some local joe schmoe truck rig filling up the local *top tier* stations.
I'd be inclined to hear some industry folks on what method do you decide to pump your gas...
royster


" It is the use of power tools that separates man from animals"

Location: New Brunswick, Canada
Joined: Feb 11, 2011
Points: 284

Re: While I wait for the snow, what about the fuel?
Reply #10   Dec 25, 2011 9:39 pm
JoelKlein wrote:
I use 93 for my Toyota sequoia, whice improves power majorly in low rpm, so I can cruise on 60 mph with only 1500 rpm... Instead of 1900 rpm.. So when I filled up my truck, I filled the B&S 2.5G gas container

The only way that you could come up with a 400 rpm difference  would be that you are using a a higher gear with the 93 octane.

This message was modified Dec 25, 2011 by royster


RedOctobyr


Location: Lowell area, MA
Joined: Nov 5, 2011
Points: 282

Re: While I wait for the snow, what about the fuel?
Reply #11   Dec 25, 2011 9:59 pm
Yeah, maybe the added engine torque allows running in 5th, at 1500, vs 4th, at 1900, to get acceptable performance (for hills, passing, etc)? That's the only way it makes sense to me.

As a minor aside, Stihl recommends 89+ octane fuel in their engines. Maybe it's different for small, high-revving 2-strokes, vs larger 4-strokes. But at least some OPE recommends gas higher than 87 octane.
JoelKlein


I wonder how a 2021 snow blower will look like...

Joined: Sep 26, 2011
Points: 74

Re: While I wait for the snow, what about the fuel?
Reply #12   Dec 25, 2011 11:25 pm
Sorry, I was away for a couple hours. here is the story About the high octane: first of all, my dealer recommended NOT LOWER then 89 for the Toro 1028. Maybe he is wrong. I will call up Briggs and ask. I am brand new to OPE. About the Toyota: I reaserched for sooooooooo looooooong about the high octane, the compression, and about the detergent issue. I asked saverel Toyota certified mechanics at the dealers services. The all told me that the ECU will detect the octane level, and will adjust the engine to it. The sequoia/ tondra can be fitted with the TRD high performance kit, which includes bigger fuel injectors, Air Intakes, etc... And then you should use higher octane, becouse the engine is going to compress up to 9:1 instead of the standard 8:1. Now, even without the TRD kit installed, I can In fact stay in a higher gear at the same speed, When i use higher octane. Versus with 87 octane my transmission keeps its self bussy shifting gears up and down. But this is all fine as long as I'm drivIng with the octane in mind... Once I go HARD on the paddal, I'm anyway forcing the transs in to the lower gear... So money in trash... It might be worth trying 89 instead of 92/93. But I'm afraid the gas turnover is much less and not fresh! If any one here feels. That I am wrong, I'm willing to learn. I'm open.
This message was modified Dec 25, 2011 by JoelKlein


Toro 1028 OXE
fleetfoot


Joined: Jan 23, 2011
Points: 19

Re: While I wait for the snow, what about the fuel?
Reply #13   Dec 26, 2011 12:36 am
From page 15 of the 1028 owners manual, "Fill the fuel tank with fresh unleaded regular gasoline from a major name-brand service station (Figure 26)." Typically, regular unleaded gasoline has an octane rating of 87 depending on elevation. The detergent level is independent of octane level.
JoelKlein


I wonder how a 2021 snow blower will look like...

Joined: Sep 26, 2011
Points: 74

Re: While I wait for the snow, what about the fuel?
Reply #14   Dec 26, 2011 9:02 am
About the detergent level: I'm puzzeled, alot of people says its the same and that is the Law and allot of people say its 87 does have less of it. What I need, is some hard facts!

Toro 1028 OXE
RedOctobyr


Location: Lowell area, MA
Joined: Nov 5, 2011
Points: 282

Re: While I wait for the snow, what about the fuel?
Reply #15   Dec 26, 2011 9:53 am
JoelKlein wrote:
The all told me that the ECU will detect the octane level, and will adjust the engine to it. The sequoia/ tondra can be fitted with the TRD high performance kit, which includes bigger fuel injectors, Air Intakes, etc... And then you should use higher octane, becouse the engine is going to compress up to 9:1 instead of the standard 8:1.

The engine's knock (ping) sensor will monitor how the engine is running, yes. The ECU may try to advance the ignition timing, to produce more power. Higher octane gas will allow the timing to be advanced more, without knocking/pinging. If you run lower octane gas, the ECU will retard the timing to avoid knocking. You might see less power and reduced mileage. I had a car that recommended premium. When premium got to a level that I thought was unreasonable (~$1.80, as I recall. Clearly this was a number of years ago ), I switched back to regular. The engine automatically adjusted, and I could feel that it had a bit less pep, and my mileage dropped a little. But it was still cheaper.

But the engine cannot, so far as I know, change the compression ratio on the fly. The only ways to do that that I can think of would be to change the head, pistons, or maybe the crankshaft. But I don't think the compression ratio can change while you're using it.
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