oil filters, using another of identical size

how important is it to use only the reference list (ie. Advanced Auto Parts, Napa, all have a filter/vehicle match chart) oil filter vs. any similarly sized oil filter especially if the sizes are identical and the seals match the oil filter mount on the block?

what's is different inside the same sized filters?

Reply to
harris
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Anti-drainback valve, for just one example. In an application where the filter is vertically mounted with the base pointing up, such as my Audi or Subaru, there is no need for an anti-drainback valve. Using such a filter on an engine where the filter is mounted sideways or base down could result in zero oil pressure every time the engine is started. It won't ruin the engine right away, but over time the extra wear adds up.

There are other characteristics that can differ too, such as the internal pressure relief valve, and the overall pressure rating of the can.

Reply to
Mark Olson

Maybe nothing, but many things are POSSIBLY different: Presence or absence of a bypass valve, pressure setting of the bypass valve, presence or absence of an anti-drainback valve.

Reply to
Steve

I have heard of people using different filters if they were larger, but never a different one if it's the same size. Can you explain why you want to do this?

Reply to
scott21230

Not true. If you have a vehicle where oil pressure is used to operate an OHC chain tensioner and/or overhead lash adjuster an ADBV (anti-drain back valve) is needed to prevent oil from leaking back through the filter. Subaru spin-on filters do include an ADBV. Recent Audis use cartridge type filters, so the ADBV is incorporated into the oil system, not the filter. Older Audis that used spin-on filters, did incorporate an ADBV,

Reply to
C. E. White

That isn't exactly true. You can use a bigger filter if you know what your doing.

For example, GM specs 2 different filters for their V6 2.8L engine. One is a long one and one is a short one. If you look through the oil filter catalog for different vehicles that use the same 2.8L engine you will see some vehicles with the long filter and some with the short. The difference is that the vehicles with the short filter are speced for the short filter because their engine compartments supposedly have less clearance for the long filter. In reality, some don't have the clearance and some do, but GM and the filter references will always spec the short filter if the guy writing the reference hadn't bothered to check to see if the long filter would have fit that particular year and model.

Ted

Reply to
Ted Mittelstaedt

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