The Chevy Service department said this is not normal.They said the pressure should be 30-40psi and only go up with rpm's. My 1.5T still raises pressure 30psi-65psi without rpm increase. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters. Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. ![]() As a result, the oil filter specifications of the production oil filter and the service oil filter were also improved to meet the new engine requirements.īeginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. The oil pressure was increased to accommodate these tighter tolerances. The use of a replacement oil filter with an internal bypass valve opening pressure specifications of 15 PSI (100 kPa) or less, allows debris to circulate in the engine causing damage to bearings and other tight tolerances areas, which may result in premature engine failure. The proper match of oil filter to engine application is more important than it has ever been in the past. Today's engine has very tight tolerances, two stage oil pumps and high flow lubrication system requirements.
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