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Please don't be anxious, all of the manufacturers make great efforts to make sure your engines run clean.

I will take a look at the data later this week or next week and let you know what I find. I have the capability to run as you describe. Lets think how knowing this potential data could relate to filter design or selection.

OK, I will run some numbers and measure the diameter of the fram bypass valve I have here

Is that a factory listed spec or a measured value?

I ordered a 50 lb force gauge and we will see what these springs are set at. We can calculate from there the velocity and flow rates, given our fluid properties, tube diameters, and a few other things that should crack that bypass valve. Then I can stick it on the machine and we can see what...

We will need to give this some serious thinking and consideration. The bypass at cold temps is a serious concern I am seeing. I have a cold viscosity simulation fluid in the lab we can use for a pressure vs flow. It's a nasty gear oil that smells like garlic. I would have to flush out my system...

True

You are all clear.

Thank you for the advise ZeeOsix, I will do that. Here is a small preview for those that are following. Some of the AC-Delco Ultraguard Gold efficiency data for your viewing pleasure.

Hey folks, the tests are all complete, and the results very interesting indeed. Some filters over performed and some under performed. One to a point of failure in my opinion. The video is underway. Sorry I cannot share the results yet, but it is worth the wait. The time delay is on me and I do...

Interesting. Although the stamped steel "leaf spring" can appear the same by eye, they can have have different tension and compression properties. Material composition, geometry, and not to mention quality control can seem the same by eye, but with such small pressures and forces involved can...

Hey Mainia, I really appreciate your concern! All good health wise I am happy to report. Happy to say I am working with a very excellent and well known product reviewer/youtuber on the 3rd efficiency/capacity video. He will make it much more interesting, and more professional than I ever could...

I own a 1998 Subaru Outback Impreza Sport with a 4 cylinder (still running) purchased from a long time ago in a galaxy not so far away, so I will absolutely look into this and give you my take. Just need a little time.

Thanks for the complement! When I can get the next video done I think you will like this one the best. It will be long and may have to be split into 2. Yes how often the filter goes into bypass seems to be a real concern.

Thank you. I hope you get everything taken care of and healthy. Rest up.

Thank you!

The final testing is taking a little longer than anticipated, as I have been feeling a bit under the weather.

I will see what I can do for you. If there is one thing that makes me angry it is counterfeit filters! I have caught some that were destroying large pieces of hydraulic equipment. It's scary stuff that can cost end users dearly!

I usually just show the table values, but I can graph them for this one.