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Hey guys. I've been using Blackstone for a while now and I am a bit confused...hear me out. They have flagged lead,copper, and iron. Not to to worried about iron but I was thinking where the heck is all this copper and lead coming from? I've ripped apart a few of these motors in this year...

I bought a few of these for my toyota 4age and 7afe engine for break in oil changes and boy will I never buy these again! NO pressure relief valve. Well, kinda it's sort of built into the anti-drain back valve but i don't see how this design has any merit to it... Here ya go fellas

Hello All, I read on here A lot but don't post much but.... I wanted to share this filter. It's smaller then the 90915-yzzf2 but I figure that is not a big deal. This media seems slightly different then the yzzf2/f1 filters. Thoughts? Enjoy

hey guys, Names Anthony. This my first post here and I wanted to share my filter dissection. I bought these from eBay and I decided I would cut one open before using the other one. Union sangyo Seems to be a sturdy built filter. The pleating is very nice and the ADBV seems to be made of...