[T3] Octane

Jim Adney jadney at vwtype3.org
Sun Mar 20 07:25:09 PDT 2011


On 20 Mar 2011 at 9:23, David wrote:

> I drove a 4 cyl. motorcycle for many many years, and that bike really
> emphasized the effect of octane to me:
> 
> If I ran 93 in it; I could not keep a cold engine running with our chilly
> spring & fall mornings.
> If I ran 87 in it; ran good cold, but would ping when it came up to running
> temps.
> If I ran 89 in it; it was juuuuuust right (just like little red riding
> hood's porridge)

There was probably more going on there than just variations in 
octane. Different amounts of ethanol might also have been a factor, 
plus there are lots of other additives that vary with the grade.

Still, those are interesting observations.

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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