I'm new to BITOG and have been searching the forum for oil choices for my vehicles. Currently I have a 2008 Tacoma Pre-runner with a 2.7L engine. I decided not to do a early change keep the factory fill in the engine till the 5000 mile mark. I opted to do this because: -The large oil pan for this engine (6.1qts) -it's a fairly new engine design (2TR-FE) -it didn't use a drop of oil during the first 5000 miles -I have a 7yr/100k mile warranty and I'm sticking to the recommended maint schedule. -it's a Toyota 4 banger truck engine My question is what's the opinion on the first OCI for a new engine, and was my school of thought correct on waiting till 5000 miles? I have a feeling it really varies on the type of engine and how its being used.