Chevy Duramax Diesel Fuel Filter - Do-It-Yourself Diesel
11. The new fuel filter comes with all new O-ring seals for the sensor bulkhead and filter's sealing surface. Lubricating the O-rings with petroleum oil (form of light grease) will help hold them in place, while you fasten the filter, and will condition the rubber seals, protecting them from the conditions the engine compartment is subjected to. View Related Article
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