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Message: <blockquote data-quote="zghorner" data-source="post: 3225158" data-attributes="member: 35089"><p>You should order the oring for the HPOP rear plug and replace it yourself whether that is where it is leaking or not, while you're at it order a set of orings for the drain valve on the fuel filter housing because as mentioned already its just a matter of time before they leak and its nice to have a set on hand. The HPOP plug wasn't my problem but the factory oring was in horrible shape (my truck only has 140k miles) and looked ready to give out at any minute. Hardest part about that job is getting the female threads super clean of oil before installing the plug with locktite.</p></blockquote><p></p>