So with all the new reasons to get out and shop post-Thanksgiving (now you've got ‪‎Black Friday‬, Small Business Saturday‬, and ‪Cyber Monday‬) here at DIY Moto Fix, we figured we would make it simple and just have one big four day sale.
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Whether you're the one getting up at 5am to get the best Black Friday deals, or you're the one driving 90 minutes north to go ride in the dirt all day (that would be us), from today through Monday the 30th, everything on the DIY Moto Fix site will be available at 30% off. We normally don't go this steep with our discounts, so you definitely want to jump on board for this one before Monday the 30th is over.

If you are taking off for a weekend of riding, then be sure to share this post with your significant other so they know what to put in your stocking this year!

Start making your wishlist by clicking here!

Generally speaking, when two fuels are blended the octane rating of the resulting fuel is approximately the average of the two fuels. So if you had a gallon of 87 octane and a gallon of 93 the resulting blend would have an octane rating of 90. I'll be the first to admit that 1/3 of a gallon of fuel added to a two gallon gas can won't have much effect on the octane rating. For those of you that like numbers, 0.33 of a gallon of 87 added to 1.67 gallons of 93 will yield the following octane rating:

0.33 gallon of 87 / 2 gallons = 16.5% of the total mixture
1.67 gallons of 93 /2 gallons = 83.5% of the total mixture

(0.165 x 87) + (0.835 x 93) = 92 octane blended fuel

So in a two gallon can, the octane rating of the fuel has dropped a point due to the 1/3 gallon of 87 in the pump hose. Unless you have a very well developed performance engine, this isn't anything to lose sleep over. I think a bigger reasons to want to keep that 1/3 of a gallon out of your can is due to the possibility of ethanol being in the hose from the previous sale. Many articles can be found outlining why ethanol should be avoided, but the main reasons include part corrosion due to the exposure to alcohol, rubber seals and o-rings may not be compatible with ethanol resulting in swelling and failure, and some plastics deteriorate when exposed to ethanol. Not to mention ethanol contains less energy than gasoline. Again, we're not talking about a large percentage of ethanol in the overall scheme of things but I prefer to stay away from the stuff when I can.

Fueling Tip
I'm very careful about what I run through my powersport engines. To safeguard against filling up a fuel can with residual fuel from the previous sale, I like to donate the first gallon of "premium" to my vehicle before filling my gas cans. This ensures whatever fuel was in the hose and pump is flushed out and that I'm filling up my cans with premium. If you are borderline OCD about what goes in your engines like I am, you may consider adopting this practice.

I suspect many of you have other tips and tricks regarding fueling. Leave a comment below and share your thoughts and experiences so other motorheads can benefit!