Lead had the effect of acting as a slight lubricate that did not burn well so it "flowed" through the system and provided a fine coating on the valves and valve seats. This fine coating actually worked to slightly extend the life and reduce wear. However the benifits of unleaded fuel now used, include reduced carbon which also helps reduce wear.
Bottom line is the aftermarket additives are usually a total waste of money and a sham.
You might run an ocasional carburator cleaner every 5 years or diesel injector cleaner every 5 years or so. More important is to run a hd grade of motoroil and change it every 500 hours.
New gas is bad about turning to varnish sooner so running the fuel through the system often is very important for gas engines. Then, some country's military have diesel fuel on storage that is over 10 years old that can still be used if treated for alge growth and water accumulation. I have heard of 40 year old diesel fuel in military reserves in russia thats still viable.
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
... [Read Article]
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