Comparison of Amsoil oil filter to Delco UPF 44 or Mobile 1 ? Your opinions?
Amsoil oil filter?
- Thread starter yankees1
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From what I've found out it's about even. Any of these filters will get the job done.
They all filter in the 10 micron range. The only thing I found is the Amsoil filters for my application have the bypass valve set at 7 to 9 psid. My engine has a bypass valve built into the block set at 18 psid. So there is no need for Amsoil to put a bypass valve in the filter let alone set it to a lower psid than the factory valve. I think this is a case of Amsoil trying to cover more applications with a single filter to reduce inventory requirements.
They all filter in the 10 micron range. The only thing I found is the Amsoil filters for my application have the bypass valve set at 7 to 9 psid. My engine has a bypass valve built into the block set at 18 psid. So there is no need for Amsoil to put a bypass valve in the filter let alone set it to a lower psid than the factory valve. I think this is a case of Amsoil trying to cover more applications with a single filter to reduce inventory requirements.
Patman
Staff member
The one area the Amsoil excels at is in dirt capacity. Since it's designed as a long drain filter, you know it's going to be a bit better in this regard than the Mobil 1 or Ultraguard, which are probably not going to hold as much dirt. If you ask AC Delco or Mobil 1 how long to leave those filters on, they will most likely tell you 3k, since they don't have 100% confidence that they'll go longer. That's not saying they won't, just that the Amsoil is a safer bet for the long haul.
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