I agree with what you say in the video Eric, except for one thing… It is NOT ok to go 6, 7, 8, hell I’ve even heard 10 THOUSAND miles because “I use full synthetic”. I work at a lube shop and this is the biggest misconception people have about oil. They think they can go longer between changes because they get the synthetic which is just not true. Synthetic oil just gives your engine BETTER PROTECTION for those 3k miles than conventional oil. It doesn’t mean you can go longer between oil changes.