Re: IML: fuel use

Octane is a measurement of a fuel's ability to resist exploding (Detonation). If fuel explodes instead of burning evenly, it will eventually destroy valves and break pistons. lead increased octane (slowed flame propagation) thus reducing detonation. The lead also lubricated the valve seats a small bit, but I think the past 30 years have shown that unleaded fuel doesn't really destroy valves like it was once believed to. But that's just my opinion, I could be wrong...

David C. Wilker Jr. USAF (RET)
Children need love, especially when they do not deserve it.
- Harold S. Hulbert

----- Original Message -----

From: CHRISTINE & CHRISTOPHER

To: mailing-list@xxxxxxxxxxxxxxxx

Sent: Monday, March 28, 2005 11:10 PM

Subject: Re: IML: fuel use

Hello all,

Detonation, no. I can tell you that I have had zero issues with running 87 octane as long as I add the Lucas. The way it was explained to me, and keep in mind I am not a mechanic, is this. High octane does not lubricate the upper cylinders, rods, or lifters, thats what lead in the gas was for. The reason we run high octane is because is somewhat of a substitute for the lead not being there but in time it will still burn out the valves. Lucas is not a lead substitute but lubricates the valves better than lead did. That is why I have never needed a valve job, I don't run high octane.

I am sure that my explaination is very incomplete, I don't know the spacifics of it, I wish I did. If you have any further questions feel free to write off list at cchmaness@xxxxxxxxxxxxx

Chris M.

----- Original Message -----

From: W.Roddick

To: mailing-list@xxxxxxxxxxxxxxxx

Sent: Monday, March 28, 2005 3:29 PM

Subject: RE: IML: fuel use

And you can burn the cheaper (assuming 87 octane regular) in it without detonation? Or did I misunderstand what you meant by "lowest cost gas"?

Bill Roddick
'64 Imperial Crown
'72 'Cuda 340
'88 Cherokee Laredo
'95 Concorde

From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of CHRISTINE & CHRISTOPHER
Sent: Monday, March 28, 2005 2:02 PM
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: fuel use

The Compression ratio of my 63 is 10 to 1.

Chris M.

63 custom 2 dr.