Re: IML: Should I Add Lead Substitute?

[<wardle65@xxxxxxxxxxxxxx>]

Hi Keith

In my 58 I use an upper cylinder lube made by "moreys" measured to what it 
says on the bottle.  My old HEMI is tired  so at some stage I will have to 
rebuild anyway but hopefully this prolongs it's life a little while longer. 
I also use the highest octane fuel available in my local service station 
with an octane booster.  You can buy cheaper ocatane boosters that boost the 
octane by about 2 points however I found one that boosts it by 5 - 6 points. 
It can be expensive $16 - $18 a bottle which does one tank.  I don't drive 
the car a lot so I think it's worthwhile to me.  I don't have anymore 
pinging probs so it works ok.

Regards
Chris
1958 Imp Crwon Coupe


----- Original Message ----- 
From: "PAUL WENTINK" <randalpark@xxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Monday, December 17, 2007 11:03 AM
Subject: Re: IML: Should I Add Lead Substitute?


The 1958 Imperial engine requires high octane leaded gas. If you can't
get it, and this substitute is legitimate, than I recommend that you do
what the previous owner suggested. 1955 was the last Imperial that can
run on unleaded gas without adversely effecting the engine, primarily
the valves. Your engine can be rebuilt to run on today's fuel by having
the cylinder heads reconditioned using hardened valves and valve seats.

The damage that will occur from using unleaded gas is generally
gradual, and wears the valves and valve seats. If the engine is spark
knocking or "pinging" from too low of octane, then it should be
de-tuned to run silently. If not, bearing damage and possibly piston
damage will result. Most of this can be alleviated by refraining from
high speed driving, but not entirely.

Regardless, of the above, lack of use will also ruin the car. It needs
to be driven. If the lead substitute you describe prevents damage, use
it. If not, drive it anyway, and when the time comes for engine work,
it can be done to allow enjoyment of your car under today's driving
conditions.

Good luck and congratulations on buying the '58.

Paul W.


-----Original Message-----
From: HOFCAG@xxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Sun, 16 Dec 2007 1:51 pm
Subject: IML: Should I Add Lead Substitute?



About six weeks ago I acquired a beautiful '58 Southampton 4dr. 27,000
original miles and runs great. No performance problems whatsoever and
I hope to keep it that way. The man I bought the car from has
collected primarily 1950s American cars for many years and presently
has over 20 in his collection. All in excellent shape. This guy knows
plenty about cars and he has strongly advised me to add "CD-2 Lead
Substitute" at the rate of one oz. per 10 gallons of gasoline every
second time I fill the tank with high test gas. I've been doing that
and everything seems fine. A few days ago I met another man who also
claims to know a lot about old cars and he said I should definitely NOT
add lead substitute to the tank. He claims that could harm the engine
and told me to simply burn the highest octane unleaded premium gasoline
I could find. What do you guys advise? Opinions? I want to keep my
old HEMI healthy & happy.

Keith - Durham, NC-58 Southampton




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