[AT] Mixing High Octane gasoline and Diesel fuel

[Jim and Lyn Evans]

Actually, the higher the octane, the slower it burns. If you put in high
octane gasoline into an engine that doesn't require it, the performance will
probably be reduced because it doesn't burn fast enough.  High compression
engines develop so much heat that you have to have slower burning fuel to
prevent preignition.

My dad always had about 50 gallons of diesel put in his 300 or so gallon gas
tank.  He did if for valve lubrication.  He never had problems with the
tractors.  However, it became a pretty rich mixture when the big tank
started getting empty.  His pickup would tend to not shut off and would
smell like a diesel.  I also remember that my Honda mini bike did not like
running on diesel at all...  :)

Jim

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Dean VP
Sent: Tuesday, April 12, 2005 6:36 PM
To: at at lists.antique-tractor.com; AT JD
Subject: [AT] Mixing High Octane gasoline and Diesel fuel

I was informed of a way to get more performance out of our lower compression
engines that were designed to run on lower octane gasoline. The theory
explained to me was that the current high octane gasoline burns too fast to
get full performance from our low compression, long stroke engines. It was
stated that a 25% to 35% diesel fuel mixed with gas would produce a slower
burn rate (lower octane) offering more power and torque. Intuitively, this
theory makes some sense to me.

Anyone with first hand experience trying this? Sure would solve the top end
lubrication issue. But ... with the downside of some potential Pre-ignition
knock. Then add some water???  :-) 

Dean A. Van Peursem
Snohomish, WA 98290

I'm a walking storeroom of facts..... I've just lost the key to the
storeroom door 


www.deerelegacy.com

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