Added a bypass oil filter to my 23 4Runner

[Mrvmax]

I had a twofold reason, first, to filter better and second to extend my oil changes using sampling to determine when it needs changes. I ended up using a Frantz filter (their universal kit) and so far am pleased with it with only 1k on the new filter.

My wife does not drive her 19 much so I am debating on adding one to it.

 

[spartacus]

I had a twofold reason, first, to filter better and second to extend my oil changes using sampling to determine when it needs changes. I ended up using a Frantz filter (their universal kit) and so far am pleased with it with only 1k on the new filter.

My wife does not drive her 19 much so I am debating on adding one to it.

Can you post some pics with a brief write up. Thanks

 

[Ezlife45]

My thoughts,

Bypass filter, probably not a bad idea. Extended OCI, probably not a good idea. Oil is cheap, engines are not.

 

[Mrvmax]

My thoughts,

Bypass filter, probably not a bad idea. Extended OCI, probably not a good idea. Oil is cheap, engines are not.

The purpose of the bypass filter is to use oil analysis to determine when the oil needs changed. With oil analysis you have empirical data to tell you when the oil is bad. Eventually I will recoup the cost of the bypass filter.

 

[Mrvmax]

Can you post some pics with a brief write up. Thanks

I used a 1/8 BSPT-1/8 BSPT-1/8 NPT Tee (like this one EVIL ENERGY 1/8 BSPT Oil Pressure Sensor Tee Adapter, Stainless Steel 1/8 BSPT Female to Male Threaded Oil Pressure Adapter with 1/8 NPT Female Port, Sliver https://a.co/d/09hZjDFM ) to supply the bypass filter off the oil pressure sensor port. The 4Runner uses the BSPT threads on the pressure sensor. Reaching the oil pressure sensor is kind of a pain. It’s on the lower passenger side of the engine, accessible from the bottom.

I mounted the filter bracket on a piece of metal plate which I bolted to existing threaded holes on the passenger side of the engine bay next to the air filter. I do not recall the bolt size I used. It put the filter at slight angle, but it kept me from having to drill and use sheet metal screws and I can loosen the bolts and swing the filter housing when replacing the filter. You can buy small pieces of metal from the box stores to make the mount.

I used a Gates part 31285 oil fill cap which was too small to use the nut supplied with bulkhead fitting in the kit. I ended up not needing it, after drilling the cap with a 5/8 drill bit I threaded the cap with a 5/8-18 tap. Using the lock ring the bulkhead bolt was plenty tight without the backing nut. Since this is not a pressurized connection it will be fine.

I just zip tied the return hose to a wiring harness, the heat should not be any more than the engine generates already. I will monitor down the line and see if there is any effect on the wiring cover but I doubt there will be. I zip tied the supply hose in a few places, by the tee (so it does not get caught up in a pulley or fan belt) and a couple places up to the filter. The hose runs under the air box to the filter so it stays out of the way.

I bought this kit (you can probably find a discount code for up to 20% off): Universal Frantz Oil Filter System | Gas & Diesel Oil Filter

I also used this on the return going to the oil fill cap to make it easy to disconnect but it is not necessary: Frantz Oil Cap Quick Disconnect | Hot Shot's Secret

Nothing else was needed for the install. FYI mine is a 2023 but this should be the same for others but you will need to verify that.

Here are the only pics I have Frantz On 5th Gen 4Runner | Flickr

 

[Mrvmax]

One thing to add, Frantz supplies a small packet of sealant for the fittings. Do not open it until you are ready to use it, it seems to dry quickly. Also, use enough to properly cover the threads. I tried do all the fittings with one tube (mine came with 2) and I ended up with a small leak on the fitting off the oil pressure sensor.

Loctite 545 worked well as a sealant also if you run out of the stuff that comes with the kit.