Re: IML: Should I Add Lead Substitute?

[<mopar413@xxxxxxxxxxx>]

That guy that said not to use the additive is wrong.  Use an additive like the guy that had your car recommented.  I use ATF and it works for me.  Just pour a qt in the gas every 3rd tank or so.   CD-2 works also.
---- PAUL WENTINK <randalpark@xxxxxxx> wrote: 
> 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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