From: Mel Miller (nourmahal@worldnet.att.net)
Date: Sun May 02 2004 - 10:30:41 PDT
Howdy List and M,
Combining what you have stated with Ian's posting about carbon clogged
intake manifold passages contributing to cold natured starting and poor
gas mileage jogged something in my memory. I once read somewhere (How is
that for an authoritative reference!) that older engines and those that
are idled a lot or lugged in low gear can become carboned up, raising
the octane rating of the fuel needed to keep them running smoothly.
Also, if the motor has ever been rebuilt the heads might have been
milled, thus increasing the compression ratio just a little bit,
resulting in the need for more Octane?
The 318, when used in the M880 series, was a mature design with a well
deserved track record for reliability. It ran properly on the regular
gas available at the time. Perhaps someone on the list with more
automotive or gasoline expertise can comment on carboning up or
deterioration of Octane ratings from 1977 to 2004.
Regards,
Mel Miller
Corpus Christi, TX
361-937-3317
M725
M884
M886
86 VW Doppelkabin Drop Side Diesel PU (OD)
On Sunday, May 2, 2004, at 12:04 PM, Movnmanj1@aol.com wrote:
> Well, guess I'm going to have to throw that old lead pencil and
> paper sack away. Because, the few times I've put Regular unleaded in
> my old M882, it bucks,coughs and sputs out of the station. I have
> checked the mileage, on more than one occasion, between regular and
> midgrade, and mileage and performance is much better with midgrade than
> regular. In fact, when I have put the "low octane" in it, it feels
> like I am pulling about 10,000#'s, with nothing hooked to it. The
> engine runs extremely loud and has NO power. Good midgrade gas? Feels
> light as a feather. I would run premium but don't feel like I can
> afford a steady diet of it. I have a Bobcat loader, same way. As far
> as I am concerned, regular is a waste of money. Seen too many
> problems, with other folks vehicles, who run the "discount regular".
> The newer vehicles with computer controlled fuel and timing can burn
> the mess pretty well. But, these older models don't tolerate it. I
> have a M62 wrecker w/602 Continental, same way. No doubt I'm wrong,
> but all I can say is It works for me!
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