Re: IML: Lead Additive

[aeyn <mr85000@xxxxxxxxx>]

I wasn't sure what year it was as I had a 1972 Duster with a 198
Slant6 and the owner's manual mentioned something like that.

Æyn

--- mopar413@xxxxxxxxxxx wrote:

> ---- sosmi@xxxxxxxxxxx wrote: 
> > I've heard the hardened valve seats came about, in 72 ,BUT
> the only way to know for sure, would be to check head casting
> numbers, for this you would have to remove the valve cover.In
> any case, a fuel additive, would not hurt. 89 grade fuel is
> fine, most people don't buy 91-93, so the fuel is degrading,
> while it sits in the tank. If you want to add octane boosters,
> add it to lesser grade fuels.(87-89) it works the best then.For
> those who use their cars infrequently, treat the fuel with a
> stabilizer-type additive, when you buy fresh fuel.Don't think
> you can save old fuel, by adding additives, YOU CAN'T!! The
> best thing to do is store the vehicle, with the least amount of
> fuel. It's easier to deal with 5 gallons or less of bad gas,
> than a full tank!.We've had a lot of  experience with bad gas
> in many boats, in some cases, we've had to dispose of 200
> gallons of bad gas. This cost more than the fuel cost new! The
> new fuels today, don't lend them selves to any long term
> storage, so prope
> > r treatment is most important. Ya'll have a nice day ,Dave.
> > 
> > 
> > -------------- Original message -------------- 
> > From: Tim Durrer <tdkd99@xxxxxxxxx> 
> > 
> > > The owners manual for my 73 states you may use both 
> > > leaded or unleaded. The production date on the vehicle 
> > > is 11/72. Not sure of the casting numbers or if this 
> > > version of 440 was used across the board in other 
> > > Mopars. 
> > > 
> > > Tim 
> > > 
> > > --- sosmi@xxxxxxxxxxx wrote: 
> > > 
> > > > According to DAS BOOK, hardened valve seats, came 
> > > > out around 74, the casting #3769902 the 73, 400-440 
> > > > motor home castings 3751213, could also have 
> > > > hardened seats.The castings, 
> > > > 3769902,3769975,4006452, all have hardened 
> > > > seats.Ya'll have a nice day, Dave. 
> > > > 
> > > > -------------- Original message -------------- 
> > > > From: aeyn 
> > > > 
> > > > > Regarding this subject. 
> > > > > Does any one recall when Chrysler started to put 
> > > > the hardened 
> > > > > valce seats in the engines. I remember something 
> > > > about they 
> > > > > started gradually putting in the hardened seats 
> > > > PRIOR to 1975 in 
> > > > > differnet model lines. 
> > > > > 
> > > > > ƹn. 
> > > > > 
> > > > > 
> > > > > --- Dan wrote: 
> > > > > 
> > > > > > There were a number of posts recently about lead 
> > > > additives but 
> > > > > > I don't 
> > > > > > remember anything about "amounts per gallon". I 
> > > > followed the 
> > > > > > directions on 
> > > > > > the product I bought of 1/2 ounce per 5 gallons. 
> > > > Considering a 
> > > > > > half ounce is 
> > > > > > such a small amount, does this sound right? 
> > > > Also, can someomne 
> > > > > > tell me what 
> > > > > > might happen toa 440 or 413 if it is run with 
> > > > premium unleaded 
> > > > > > gas and no 
> > > > > > lead additive? If it is harmful, would it be 
> > > > immediate or 
> > > > > > gradual over time? 
> > > > > > 
> > > > > > I'd also like to join in with thanks to those of 
> > > > you who fought 
> > > > > > for our 
> > > > > > freedom. The character and courage of men and 
> > > > women like you is 
> > > > > > responsible 
> > > > > > for the freedoms we all enjoy today. 
> > > > > > 
> > > > > > Thanks You! 
> > > > > > 
> > > > > > Dan Collins 
> > > > > > 67 Crown Coupe 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > ----------------- http://www.imperialclub.com 
> > > > > > ----------------- 
> Some cars came out with the harded valves in 1972.  
> o
> > > >     Most of them were Chrysler product.
> > > > > > the 
> > > > > >  
> > > > > > 
> > > > > 
> > > > > 
> > > > ----------------- 
> > 
> > > 
> > > 
> > >
>
________________________________________________________________________________
> 
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