Originally Posted By: AuthorEditor
There may be less surface area in some filters, but some have a lot more depth to the media therefore adding dirt trapping ability, etc. Also, they claim they use better quality media, including synthetic types, to get better results. For example, look at the fuzzy media used in something like the Fram Extended Guard. On the other hand, I think in general modern engines run cleaner and cleaner, using better tolerances and better controls that eliminate the creation of many deposits, when everything is working properly. They also have very tightly sealed air cleaner boxes that let in a lot less crud. I can't believe how clean my wife's Chevy Impala keeps the oil with more than 65,000 miles on the clock. Even when I drain it at the end of an OCI it is only golden like pancake syrup, not black and cruddy like all oil was years ago. I'm not sure modern filters really have that much work to do!
I tend to think that since purolators have quality construction and high efficiency along with lots of media area that they have as much or more holding capacity as other filters.
I agree with you that most modern filters probably don't have a lot to deal with, but there are some modern engines that sludge more than others. The engines in the impala are pretty clean running.
There may be less surface area in some filters, but some have a lot more depth to the media therefore adding dirt trapping ability, etc. Also, they claim they use better quality media, including synthetic types, to get better results. For example, look at the fuzzy media used in something like the Fram Extended Guard. On the other hand, I think in general modern engines run cleaner and cleaner, using better tolerances and better controls that eliminate the creation of many deposits, when everything is working properly. They also have very tightly sealed air cleaner boxes that let in a lot less crud. I can't believe how clean my wife's Chevy Impala keeps the oil with more than 65,000 miles on the clock. Even when I drain it at the end of an OCI it is only golden like pancake syrup, not black and cruddy like all oil was years ago. I'm not sure modern filters really have that much work to do!
I tend to think that since purolators have quality construction and high efficiency along with lots of media area that they have as much or more holding capacity as other filters.
I agree with you that most modern filters probably don't have a lot to deal with, but there are some modern engines that sludge more than others. The engines in the impala are pretty clean running.
