https://cnrautoparts.com/2008-....2010-ford-powerstrok
However, it’s not actually oil, but diesel fuel that has mixed in with the oil. One of the more infamous problems on the 6.4 Powerstroke is its weak pistons that were prone to early cracking. A cracked piston allows extra air into the cylinder, which then decreases the compression ratio. The DPF can restrict airflow, which can lead to higher exhaust gas temperatures and slower turbo spooling. By removing this restriction, you can improve exhaust flow and reduce exhaust gas tem
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