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    Valvoline Modern Engine Full Synthetic

    Valvoline has a Modern Engine formulation which is supposed to reduce deposit buildup, in particular for GDI and turbo charged engines. I noticed they also charge more for this than their regular Full Synthetic. Does anyone know if Valvoline has additives that the other oils do not, and if...
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    AC Delco oil filter bypass pressure

    Does anyone know where specs are for the bypass valve opening pressures for various oil filters? Especially, AC Delco PF64? I have seen some information that the PF64 bypass pressure has been increased to 22 PSI, while the WIX equivalent (57060) still has a bypass pressure of 12 PSI. The...
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