Toyota oil filter light leak

[ZeeOSix]

The metal to metal leaf spring bypass is prone to leak. Regardless how “smooth” surface may appear…Yes, ruffles exacerbate the issue. Believe it or not, but they may have actually been intentional to prevent movement…acting like a “crush point “ between 2 metal surfaces. Just a possibility.

Ruffled leaf springs were not invented to "prevent movement". Prevent movement of what? The leaf spring sits down in the center tube hole, so how is it going to move when it's locked into the top of the center tube. This is getting wild with the theories and justification of messed up leaf springs. Seem the basic understanding of the oil filter design and configuration is not fully understood.

Could design be improved? Yes…with a gasket.

OG Ultra ... why do you think that leaf spring gasket was used in that design? Whoever engineered the OG Ultra knew how to ensure high efficiency by ensuring there were no internal leaks going on.

 

[Glenda W.]

The metal to metal leaf spring bypass is prone to leak. Regardless how “smooth” surface may appear…Yes, ruffles exacerbate the issue. Believe it or not, but they may have actually been intentional to prevent movement…acting like a “crush point “ between 2 metal surfaces. Just a possibility.
Could design be improved? Yes…with a gasket.

110% not intentional. Poor manufacturing and QC. Good vs bad.

 

[ZeeOSix]

110% not intentional. Poor manufacturing and QC.

The new version with "ice cleats" so it doesn't move around.

 

[Fair enough]

That was without any constant debris or soot generation going on. Plus, the rate of flow in that "demonstration" could have been higher than what it would get in real use. So of course it will eventually clean up a fixed volume of oil if it's recirculated many times through just a super high efficiency filter. Context matters.

It's not a normal filtering setup to only use a bypass filter. Fact is, if there is only a bypass filter being used an it's only flowing 10% of the oil volume going to the engine, then the other 90% with newly generated debris is going through the engine unfiltered. It's not an ideal setup, and that's also why a full-flow filter is also used with a bypass filter. No company these days will say to only use a bypass filter without also a full flow filter.

No, I see the soot the full flow is not able to clean being cleaned by the bypass. Better filtration = less wear. The full flow on running engines is not getting all the soot, black oil. Put a bypass sub micron on and the oil turns clear.
It is a totally normal set up to not use a full flow when using a toilet paper bypass, and is done all the time. If one wants to leave the full flow on to lighten the bypass work that’s fine, not required. Another reason is if the owner is late changing the bypass element the full flow can do something until they change the bypass.
I’ve had a Toyota cartridge oil filter, changing at 5000. The element always looked clean. At 162k the engine sounded and felt new. Of course they must have good valves and valve seats to do that regardless of oil filter. A car with good valves runs cleaner.

 

[ZeeOSix]

No, I see the soot the full flow is not able to clean being cleaned by the bypass. Better filtration = less wear. The full flow on running engines is not getting all the soot, black oil. Put a bypass sub micron on and the oil turns clear.
It is a totally normal set up to not use a full flow when using a toilet paper bypass, and is done all the time. If one wants to leave the full flow on to lighten the bypass work that’s fine, not required. Another reason is if the owner is late changing the bypass element the full flow can do something until they change the bypass.

No legitimate company making bypass filtration systems is going to recommend only using the bypass filter without also using a full-flow filter. There's more than just super small soot participate in motor oil. The old toilet paper filtering systems were invented a long time ago to be used on engines that had no oil filter to start with, so adding it was a lot better than no filter at all.

I’ve had a Toyota cartridge oil filter, changing at 5000. The element always looked clean. At 162k the engine sounded and felt new. Of course they must have good valves and valve seats to do that regardless of oil filter. A car with good valves runs cleaner.

It's actually engines with good ring sealing that run cleaner because less combustion blow-by gets into the sump and oil.