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If you read up on the lubricity requirements for bosch high pressure fuel pumps you will discover that the fuel sold here in the US does NOT meet its lubricity requirements. IMHO using an additive just for that reason alone keeps me doing it. I have been using Optilube in every tank for over 5 years. Cheap insurance if you ask me.
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2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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