You are correct but it is a common way to check for blow by. After the first time I used the tractor I went to use it again and while checking my fluids and just a quick once over noticed the dip stick was not fully seated when I know it was correctly seated at the beginning of the first use. At that point I seen the oil coming from the crank seal. I immediately knew the to were related and closed the dip stick fully started the tractor, idled it down and loosened the oil fill cap and it was shot out of my hand indicating crank case pressure, and alot of it.
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