Gumart1

Anyone install a 3/8" inline transmission or power steering filter on their LS430? I used them on my power steering return line on my '98LS I previously owned, as the first gen cars were known to have more frequent pump failures. I don't hear of too many PS pump failures on the 430.

jharris400

Don't see many mention using one but if it makes you feel better go for it.

YODAONE

To avoid leaks, you need to locate a filter that has metric size hose nipples.
A puny filter is prone to clogging and is then worse than no filter at all.

Use a larger remote style spin on filter:

This is the general concept..but lose the crummy hose clamps in favor of constant tension clamps. Plugging and unplugging lines to change an inline filter is asking for it.

Jabberwock

I am sure there are some pump failures out there, but in 10+ years on the forum I cannot remember seeing an LS340 power steering pump failure. I suggest doing a PS reservoir drain and refill every 12-18 months to keep the fluid semi fresh and you should be good to go.