[A26B]

Originally Posted by XfireZ51

I usually start the motor if its cold and warm up the oil but not hot. Then I'll use a floor jack to raise the passenger side of the car slightly. Remove the oil filler cap and undo the drain bolt. Let it sit overnight. I will also pour about
3/4L of oil into new filter before installing.

This is my preferred method as well. While I do fill my conventional filters with oil, I have never done that with the LT5 upside down filter. Probably because I was leery about then flipping it upside down for the install & having a mess to cleanup.

Maybe lazy, but may also be because I looked into at least a dozen LT5's that had been stored by GM for at least 10 yrs. They were unceremoniously removed from the car and dropped into a crate or box, with whatever coolant didn't run out and oil still in the pan. I put an engine on a stand, drained the oil, turned it over & pulled the pan to remove rod caps for bearing/crank inspection. I was amazed to see that the bearings &crank had lots of oil on them after all those years.

Honestly, I have no concern about engine damage from starting with an empty filter. Synthetic oils are so much better than their fossil counterpart.

Please don't interpret this as disagreeing with filter pre-fill. You can't go wrong pre-filling the filter.