In retrospect, I should have used the term worn.
If too much fuel is in the oil, shouldn't the OCIs be shortened? The labs that analyze used oil determine how much fuel is in the oil. Wouldn't that be a good idea to do for the neighbors you mention?
The amount of gas in oil is measured by the labs as a standard procedure, IIRC. If the amount of gas in oil is above a certain amount, the vehicle owner should shorten the OCIs or find out why there is too much gas in oil.
Did the lab test indicate the amount of fuel in the oil being acceptable? If not and there is nothing wrong with the fuel injection system, it shows oil change intervals need to be shorter.
Send off some used oil to one of the labs that do oil analysis. The analysis will tell you if you have excessive fuel dilution, which can be caused by a leaky fuel injector or too long oil change intervals.
I remember a person opined on anther forum grease shouldn't be on a 1911. Is that true?
Maybe grease is good for the summer but not the winter?
I thought about trying a thin coating of grease on the rails and locking lugs of my 1911.
The grease I have is Hoppe's.
Interesting post.
What is an example of a low quality oil and high quality oil referred to in your post?
I'm under the impression conventional oil cleans better and keeps seals more pliable than synthetic oil. OTOH, synthetic shears less. Not sure if I'm right, though.
Are you sure it is better to run thicker oil at 260f rather than the manufacturer's suggested weight at 210f? IOW, is it worth the increase in temperature?