where did the oil go?
hey all, We just returned from our first TT trip from NC to Key West. It is about 900 miles one way. F150 4,6l v8 4x4 with towing pkg. Towing a aerolite 718fd, 3050 dry wght. My question is is i...
Forum Discussion
There is a very thin film (coating) of engine oil on the cylinder walls that is
left there AFTER the piston's lower rings do their job. There are several rings
per piston and they do different jobs/functions
Top ring is the compression ring that most people think that is all there is...
This is the oil film and how it is managed by the piston's lower ring
Now if you get these and how the various piston rings do their job, there is
another point to this...there *HAS* to be an oil film on the cylinder walls
else it goes metal to metal to wear out the cylinder wall & piston rings FAST
*THAT* tiny thin oil film does burn off and the rate it burns off dependent on
many attributes
Like the film strength of the oil, the flash point of that oil, the condition
of the cylinder wall, the thermal attributes of the cylinder wall, etc, etc, etc
left there AFTER the piston's lower rings do their job. There are several rings
per piston and they do different jobs/functions
Top ring is the compression ring that most people think that is all there is...
This is the oil film and how it is managed by the piston's lower ring
Now if you get these and how the various piston rings do their job, there is
another point to this...there *HAS* to be an oil film on the cylinder walls
else it goes metal to metal to wear out the cylinder wall & piston rings FAST
*THAT* tiny thin oil film does burn off and the rate it burns off dependent on
many attributes
Like the film strength of the oil, the flash point of that oil, the condition
of the cylinder wall, the thermal attributes of the cylinder wall, etc, etc, etc