oil filter

[mcgovern61]

~O~, color is only an indication of carbon; it does not speak to the actual condition of the oil. Also, I have had my oil sampled on many vehicles over the years and you would be shocked at what actually shows up in the reports. A lot of times, the filter is catching small particles that cannot be seen with the naked eye but ultimately reduce oil flow in the center of the pleats.

Oil filters are cheap insurance.

 

[slabghost]

Oil doesn't wear out I'm told. It does however get fouled by particles of carbon and metal which in high enough concentration cause the oil itself to be abrasive. It is my belief that changing the oil and filter often is more important than the supposed quality of either oil or filter.

 

[scdmarx]

There are the effects of contaminates and oxidation that chemically attack the oil. If whatever is in the oil bottle when new "breaks-down" after some time in an engine such that it will not pass the same tests as new oil, then that oil has experienced "wear".

 

[AApple]

My unnerstanding is, the base oil does NOT break down, but the additive package will deteriorate over time/use to where it is ineffective. And, as Ron says, there are chemical reactions that can render the base oil nothing more than a medium to circulate the normal wear/tear abrasives(carbon, metallic particles, etc.).

Ya'll know this is a never ending argument/discussion, right? :smilie_happy:

 

[scdmarx]

Ya'll know this is a never ending argument/discussion, right? :smilie_happy:

Ya, but some of us ain't got nothin better to do. :Egyptian: