I'm doing the first oil change on my new to me 2006 frontier 6cyl and I was just breezing through it as I've done countless others but once I was finished and checking for leaks I noticed my new crush washer wasn't sitting flat like the previous one did. I torqued to 27ftlb and rechecked it twice but it just isn't flattening out. Anyone have any suggestions? The bolt was originally on really tight and I needed my impact driver to get it off. Threads are good though.
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