Posted by Crazy Horse on December 19, 2017 at 09:06:16 from (75.159.240.214):
In Reply to: ZDDP......again posted by Mike(NEOhio) on December 19, 2017 at 06:20:59:
The zinc additive is no longer available in the mass-marketed oil brands, gas or diesel ....... despite what some might say about this one having it or that one having it. Not sure if it just because of the catalytic converter problem or maybe that as well as some other environmental ones. Some small-market oils still have it as an additive, for example some (not all) specialty oils have it like brands for classic hot rods or older-designed high performance engines with flat-surface tappets. But expect to pay a premium price for that stuff. A lot of oil experts (if there is such an animal) claim that owners of older cars and trucks are unnecessarily pushing the panic button about current oils not having it. I'd be guessing that very few of us have an old car, truck, or tractor that could be damaged by using newer everyday oil brands. When you think of it, despite not having the zinc additive, look at all the other lubricating additives that modern oil has that weren't there 50 years ago.
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Today's Featured Article - Product Review: Lead Substitutes - by Mike Schordine. Lead was oriinally added to gasoline as an upper cylinder lubricant. It lubes the valves and seats. If you rebuild the motor, you could use hardened seats and valves, and unleaded fuel. But if your old tractor runs good, a simple lead substitute added to the gas is a perfectly reasonable solution. And, if you are like me, your tractor is under cover, but it sits outside. So with every temperature change, the humidity in the air collects in the fuel tank, in the form of water.
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