TOYO oil filter : larger 90915 - YZZF1 : any users ?

[Swanny1172]

If cost was such a factor, then why doesn't Toyota have just one filter to fit every application? It would be much more cost effective to produce just one filter.

Of course the reason that they don't do that is because different applications have different filtration requirements.

[Rest]

<div class='quotetop'>QUOTE(Swanny1172 @ May 23 2007, 06:09 PM) [snapback]448633[/snapback]</div>

If cost was such a factor, then why doesn't Toyota have just one filter to fit every application? It would be much more cost effective to produce just one filter[/b]

Yes it would but since they don't product just one size engine for all their vehicles that is not possible now is it.

I bet you will see other vehicles with similarly matched engines as the Prius, use the OEM Prius oil filter.

There is a greater risk for problems using a smaller oil filter than OEM, but using a larger oil filter than OEM (as long as it doesn't effect oil pressure) causes no harm.

[Swanny1172]

<div class='quotetop'>QUOTE(Rest @ May 23 2007, 09:14 PM) [snapback]448638[/snapback]</div>

Yes it would but since they don't product just one size engine for all their vehicles that is not possible now is it.

I bet you will see other vehicles with similarly matched engines as the Prius, use the OEM Prius oil filter.

There is a greater risk for problems using a smaller oil filter than OEM, but using a larger oil filter than OEM (as long as it doesn't effect oil pressure) causes no harm.
[/b]

Here is a picture of two seemingly identical Toyota filters (Toyota 90915-10004 Oil Filter vs. Toyota 90915-YZZF1 Oil Filter) which shows that they are not the same internally:

[Rest]

Seemly is right, as I can't see the part numbers. We weren't talking about the Toyota 90915-10004 Oil Filter and the Toyota 90915-YZZF1 Oil Filter.

But regardless, the only thing that matters is the inlet/outlet opening size and filter media. Toyota has changed internal components on filters while keeping the same part numbers before you know.

[Swanny1172]

90915-10004




90915-YZZF1




According to some discussion about the differences on Bob is the Oil Guy, the oil filters that Toyota puts on the Prius at the factory have a sponge-like media versus the replacements that they sell which have a standard paper media. The factory filters are made in Japan and the replcement OEM filers are made in Thailand. Toyota has cross-referenced the part numbers in such a way that searching for the original part will result in the replacement part. So, you have different suppliers making what is supposed to be the exact same filter that are using totally different media.

All of this reaffirms my choice of a Mobil 1 filter!

[Rest]

But again we weren't talking about those oil filters. Paper is a better filter than sponge, the same goes for air filters.

[Swanny1172]

Were we not talking about the 90915-YZZF1???

[Rest]

Sorry my mistake, had it confused with the YZZA1 I was talking about in another thread.

[FireEngineer]

Another reason for different filter sizes is space constraints for service. My GM mini-van specs a PF-47 filter but the same engine uses a longer PF-51 on other chassis. Difference is that some mini-van engines use a oil cooler which is attached at the oil filter flange. If the longer PF-51 were used, if you could get it on, you probably couldn't get it off, hence the use of the shorter PF-47.

As you go up in engine size, aside from needed filtering capacities there is the question as to access for filter changes. The NZ series engine in another Toyota probably has a tight clearance and required a filter just shorter than the YZZF1, hence the YZZF2. Toyota just kept using the same filter for all vehicles using the same engine series. They are identical filters for anti-drainback and bypass opening pressures. And as you have shown there is difference in construction between the 10004, YZZA1 (was made in TN), and the YZZF1 noted as made in Thailand.

If we're talking about Mobil 1 filters, the M1-103 spec'd for the Prius is actually smaller than the YZZF2. Also the M1-103 is not Toyota specific, so what compromise is it making for which vehicle. My choice is the Mobil 1 M1-209 filter, same anti-drain and bypass specs as the YZZF2/F1, just a larger filtration area and capacity.

Wayne

[rudiger]

<div class='quotetop'>QUOTE(FireEngineer @ May 24 2007, 09:47 AM) [snapback]448991[/snapback]</div>

As you go up in engine size, aside from needed filtering capacities there is the question as to access for filter changes. The NZ series engine in another Toyota probably has a tight clearance and required a filter just shorter than the YZZF1, hence the YZZF2. Toyota just kept using the same filter for all vehicles using the same engine series. They are identical filters for anti-drainback and bypass opening pressures. And as you have shown there is difference in construction between the 10004, YZZA1 (was made in TN), and the YZZF1 noted as made in Thailand.[/b]

That's pretty much my estimation of the situation, as well. Although the YZZF2 is used in all of the smaller Toyota engines, it's highly unlikely that there's any sound engineering reason for it. A more likely explanation is, as stated, cost and space considerations, i.e., the smaller engines go into smaller engine bays so Toyota just uses an identical (except for length) oil filter on all of them. It's just not worth the time and expense for the Toyota engineers to see if the longer YZZF1 oil filter will work in each one of those specific, individual applications. Additionally, a longer oil filter on a smaller engine could affect production on the assembly line as engines are installed with the oil filter already attached.

But if owners discover that the longer oil filter fits with no interference (and it's exactly the same price as the shorter one), the benefits (ease of installation and increased oil capacity) far outweigh the (extremely remote) possible detriments, the only one of which I can think of being the longer filter gets too close to an extreme temperature source and/or extends down far enough to become more susceptable to under-carriage road debris damage.

This last one (road debris damage) is the reason that GM used a short filter on their rear-drive V8 cars. The oil filter was attached at the rear of the engine and hung straight down behind the oil pan. The short oil filter did not extend past the base of the oil pan, but when using the identical, longer filter, it would, and would consequently be much more likely to be struck and damaged by road debris.