Vertigo

True, but if they are in good condition (i.e. still have a smooth, flat surface) then they can be re-used. I spent a few years designing and troubleshooting hydraulic systems, so I know what to look for. In any case, even if I didn't reuse the washer, I don't like the idea of loose parts in unknown locations in my engine compartment. I would be worried about it finding its way somewhere it can cause trouble, and the only way to be sure of that is to get the part out of there.

Indeed, I did use this method for reinstalling the washer, and it worked well. I actually dropped the washer (between the fitting and the block) when I removed the banjo bolt. Anybody got any suggestions on how to keep it from falling out when you remove the bolt? I wasn't able to get my hand in there to catch it.

For the record, I inspected my filter at about 50K miles and found absolutely nothing in it. I've always run AMSOIL synthetic 5W-30, changed every 5-6K miles. Also for the record, this was a huge pain in the ass. I had to use a 4-foot breaker bar to get the bracket bolts off. Also dropped the copper washer that goes between the feed line and the block -- had to drop the plastic undertray to get it.