Re: IML: Lead Additive
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Re: IML: Lead Additive



---- 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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> > 
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