Posted by paul on August 12, 2016 at 06:41:10 from (76.77.197.114):
In Reply to: GAS QUESTION posted by jjtwister on August 12, 2016 at 06:10:30:
Those things were built when gas came in many different, low grade versions. They run on a lot of stuff. Don't worry about it.
The lack of lead might wear out the valve seats in 5000 hours. When you overhaul the head, valve seats will fix that issue for the next 5000- 10000 hours.
There is no real good perfect additive to replace lead in the gas. If you add up the cost of those $5 bottles of attitive over the years, you will spend a whole lot of money on the additives and in 5000 hours your head will still need a rebuild anyhow. All you did was spend extra money and didn't do much.
Save your money, use any good gas, and get a valve job when needed, which won't be for a long time (or is overdue already if you got a well used tractor...).
Now, if you think ethanol in gas is a sign of the devil, by all means seek out 'pure' gasoline! After all every bad thing ever in humankind is the result of turning corn starch into motor fuel.....on the other hand gasoline is a combination of 400 very different chemicals some of which cause gum and tar, some evaporate at 40 degrees while others evaporate at several 100 degrees, and so on. Whatever you believe on this topic is of course true, and we could achieve world peace if only we stopped using any ethanol and went back to buying our motor fuells from the Middle East.
Possibly a little sarcasm there at the end, but attitives only make you feel good, you will end up with about the same overhaul costs with or without thrm, I would save my money for the overhauls every 5000 or so hours.......
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