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NotMyMojo · 02-09-2016, 08:38 PM

The LS engines are known to consume oil. The main way that this seems to happen is by oil being sucked up through the PCV into the intake as the PCV system was poorly designed. I have a '06 5.3L L33 that was caked with oil inside the truck intake manifold when I took it off. You may want to consider running a catch can, or switch to the LS6 valley cover for extra assurance.

Also, before you put the engine in the truck, you may want to consider replacing the rear main seal as preventative maintenance. They seem to wear out on a lot of Ls engines rather quickly, and leak oil where the flywheel connects to the engine.

02-09-2016, 08:38 PM	#11
NotMyMojo Registered User Join Date: Aug 2014 Location: Gainesville, GA Posts: 51	Re: List of LS problems. KISS The LS engines are known to consume oil. The main way that this seems to happen is by oil being sucked up through the PCV into the intake as the PCV system was poorly designed. I have a '06 5.3L L33 that was caked with oil inside the truck intake manifold when I took it off. You may want to consider running a catch can, or switch to the LS6 valley cover for extra assurance. Also, before you put the engine in the truck, you may want to consider replacing the rear main seal as preventative maintenance. They seem to wear out on a lot of Ls engines rather quickly, and leak oil where the flywheel connects to the engine.