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The DFM system in LS engines aims to improve fuel efficiency by deactivating half of the engine’s cylinders during light load conditions
6L Duramax LML/LGH
Available for most popular diesel light and medium-duty truck applications
high fuel-delivery situations with our Bolt-On Cam Gear Retainer
valvetrain
Driven Racing Oil BR 15W-50 Conventional Break-In Oil (00106) 4.3L The DFM system in LSDriven Racing Oil BR 15W 50 Conventional Break In Oil (00106) Driven BR will be changing to Driven BR50 in 2024! Same awesome formula and 15W 50 viscosity just a new name on the label. This was done to make the product easier to identify from our other Break In oils such as BR30 & BR40. Recommended by multiple cam manufacturers, this unique petroleum break in oil provides optimum levels of Zinc and Phosphorus for flat tappet and aggressive roller