Regular vs Premium?

[keand3]

Hold on there Ken... What does Norway have in excess? Oil and Fish, so unless they find a way to get combustion engines to run on Sardines then you are safe... 

A good thing that most of the fish is exported out of Norway... A lot of those fishing companys would love to have sardine driven combustion engines... 

[FJscott]

Hold on there Ken... What does Norway have in excess? Oil and Fish, so unless they find a way to get combustion engines to run on Sardines then you are safe... 

A good thing that most of the fish is exported out of Norway... A lot of those fishing companys would love to have sardine driven combustion engines... 

Actually you can, BIO-Diesel.  I worked as a Powerhouse Engineer at a Fish Processing plant in Alaska. we had an EPA annual permit that would only allow us to burn XXamount of fuel oil. we would take the fish oil and centrifuge out water and solids then blend it 50/50 with Diesel and burn it. We would burn thousands of gallons a year.

Scott

[Joe Sull]

So which bait is considered premium

Herring vs mackerel

[gumby302ho]

The only reason I run 87 is because I can't get 85.  If it's not detonating, any higher than the bottom is a waste.

If you have significant engine work done that will increase the dynamic compression (and usually static in the process) ratio, you may find you need more octane.  Or if you spend significant amounts of time doing quite slow work and getting really high cylinder temperatures that way, a little higher may be helpful.

Otherwise, running high octane fuel is not only hard on the wallet, but it's silly.  Easy to prove on a dragstrip.  Going from 87 to 100 slows me down around ~2mph through the traps; doesn't sound like much, but it's a fairly major change, probably 4-6hp difference in the two fuels.

That being said, not all 87 is equal, nor is all 93.  If I have the choice, I avoid ethanol, though I don't usually have the choice.  87 from a respectable pump (Shell, Exxon/Mobil, BP, etc) is better than 87 from the little no-name down the street.

This also excludes oxygenated race fuels, though I suspect most people won't be willing to pay $15/gal for U4.4 (~110) or $30/gal for MR12 (~93), and despite the higher octane ratings, those two will make a very significant difference in power output, particularly if you're jetted on the rich side (or a really hot day, a rich jetting for the conditions).

Waste your money on fancyshit oils that don't work any better, if it makes you feel better.  Too high of an octane rating will measurably slow you down, spending too much on oil will not.


In v8's advancing timing a few extra degrees or more can make more horsepower and the only way to do that is with premium. Sure you loose a little bottom end but the top end pull makes up for it, thank the powers that be for premium!! BY BY PING PING PING.

[andyb]

In v8's advancing timing a few extra degrees or more can make more horsepower and the only way to do that is with premium. Sure you loose a little bottom end but the top end pull makes up for it, thank the powers that be for premium!! BY BY PING PING PING.

That's interesting, in a four cylinder the effect of advanced spark timing is that you gain midrange/bottom end.

Makes me wonder if the people that built those V8's had no clue what the hell they were doing, and just choosing parts based on what color the boxes were instead of trying to make a combination that works together.

[fintip]

The only reason I run 87 is because I can't get 85.  If it's not detonating, any higher than the bottom is a waste.

If you have significant engine work done that will increase the dynamic compression (and usually static in the process) ratio, you may find you need more octane.  Or if you spend significant amounts of time doing quite slow work and getting really high cylinder temperatures that way, a little higher may be helpful.

Otherwise, running high octane fuel is not only hard on the wallet, but it's silly.  Easy to prove on a dragstrip.  Going from 87 to 100 slows me down around ~2mph through the traps; doesn't sound like much, but it's a fairly major change, probably 4-6hp difference in the two fuels.

That being said, not all 87 is equal, nor is all 93.  If I have the choice, I avoid ethanol, though I don't usually have the choice.  87 from a respectable pump (Shell, Exxon/Mobil, BP, etc) is better than 87 from the little no-name down the street.


This also excludes oxygenated race fuels, though I suspect most people won't be willing to pay $15/gal for U4.4 (~110) or $30/gal for MR12 (~93), and despite the higher octane ratings, those two will make a very significant difference in power output, particularly if you're jetted on the rich side (or a really hot day, a rich jetting for the conditions).

Waste your money on fancyshit oils that don't work any better, if it makes you feel better.  Too high of an octane rating will measurably slow you down, spending too much on oil will not.

+1 This. Lots of research once upon a time as a 17 year old trying to understand.

This being said, I do have a friend who runs an old, tired, R100RS (83?), and he claims he noticed that I put 87 in his tank when I rode it, that it runs 'smoother' on a higher octane. When thinking about it, I imagine there is a chance that that is a possibility. But advancing your ignition timing wouldn't make you run smoother either, so I'm not sure that his observation tells us anything we didn't already know.