Announcement

Collapse
No announcement yet.

Oil Filter

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Oil Filter

    What does "partial flow" vs. "full flow" mean regarding oil filters?

  • #2
    "Full flow" means all the oil is filtered as it leaves the oil pump to be run through the engine. "Partial flow" means only the oil that runs through a certain gallery (usually a head) is the only oil that goes through the filtering process. Someone can probably knows how long it would theoretically take for all five quarts to filtered by the partial flow...

    Comment


    • #3
      The partial flow will pass (filtered somewhat) about 5 quarts of oil in 5 minutes at 50 MPH. That's not to say that ALL the oil will be filtered at once, it may take half an hour for all the oil to go through the filter, I don't think anyone has that number.

      Full flow engines were introduced sometime in the 1962 production year, they have a filter hanging from the right rear cylinder bank.

      Comment


      • #4
        Thanks guys. Would it be safe to say that a top mounted filter is "partial flow" and if it's mounted lower, it's "full flow"?

        Comment


        • #5
          Originally posted by Washtubman View Post
          Thanks guys. Would it be safe to say that a top mounted filter is "partial flow" and if it's mounted lower, it's "full flow"?
          Only kinda, sorta! A Partial Flow Filter can be remotely mounted ANYWHERE low or high on inner fenders, firewall etc. but yes Full Flow Filters are always low mounted directly into the Engine Block.

          I guess the real difference is; INTERNALLY connected and mounted or EXTERNALLY.
          StudeRich
          Second Generation Stude Driver,
          Proud '54 Starliner Owner

          Comment


          • #6
            Bottom line, if a newly built engine as clean as it should be and if major brand oil is changed once a year or every 3,000 miles, whichever comes first, either filter design is fine. The full flow is only critical when abrasive particles are introduced to the oil. No grit gets in, no problems.

            FWIW, the most recent full-flow engine I pulled down had an internal coating like 1/4" of tar. The most recent partial flow engine was relatively clean. It's how they're operated and maintained, not which oil filter design.

            jack vines
            PackardV8

            Comment

            Working...
            X