When to change hydraulic filter on log splitter? Possibly solved?

[oil pan 4]

Looks like no wix a31a06ga. They made them one time and that's it, probably for a military contract.
57123 will have to do.

 

[oil pan 4]

Minimizing Hydraulic Downtime with Proper Filtration

If your hydraulic systems are not meeting the recommended cleanliness levels, your filters may not be in the proper locations.

www.machinerylubrication.com

"contamination causes approximately 90% of hydraulic failures"
Ain't nobody got time for that.

Goin from a 25mu to an 8mu filter quantified: (kinda)

How to Choose the Right Oil Filter for Your Car

Car owners often get conflicting advice about oil filters. Vehicle owner's manuals, installers, quick-lube operators, mechanics and retail clerks all have different opinions. The reality is that...

www.machinerylubrication.com

According to ACdelco going from a 40mu to a 30mu filter cut wear in half and going to a 15mu reduced wear 70%.
Going from a 25mu@96% 45mu absolute to an 8mu@99% 27mu absolute will significantly increase the life of the hydraulics, normal seal wear or corrosion will take it out.

 

[oil pan 4]

Upgrade to the upgrade. I found a big ole filter head being tossed at work.
I identified it as having a 1.5 inch 16tpi threaded head nipple and taking a 5 inch wide filter. Yeah there's lots of those filters.
Wix lists 120+ of those 1.5-16tpi and most of them have a 5 inch gasket.
So I found a wix 51859. 28gpm 5 micron rating, 18 to 22psid bypass.