Thread: CP4 Replacement
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Old 12-07-2023, 04:54 AM   #7
ep4me
Seasoned Camper
 
Join Date: Dec 2022
Location: St. Paul
Posts: 63
M.O.C. #32135
From the internet:

Today's Ultra-Low Sulfur Diesel (ULSD) does not contain the lubricity needed to fully protect our vehicles. The Bosch CP4 fuel pump has an unusually high failure rate in the U.S., upwards of 7%, when compared to 1% failure rate in Europe..
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