LT4 8L90 feedback

[Jimbo1367]

Originally Posted by vet57air

I followed GM instructions. Used Mobil 1 Dexos 5-30w. Prelubed, then started and drove about 50 miles and varying loads under 4000 rpm. Changed oil/filter. Drove another 500 miles and changed oil /filter. Have about 2000 miles and maybe will put another couple hundred before I put it to bed. Will change oil and filter again at that time. Point of interest, when I tried to start the first time, it wouldn't. I read further down the instructions which described the "soak and idle". Which is basically connect the battery and let sit for 8 hours, then start. I let it sit over night and it started immediately.

IMO the oil change regiment it perfect for a new engine. I see way to many people buy a new car 20-70K, then do the first oil change at 5; 7 or 10 k miles. Toyotas do this a lot. Most of the Toyotas I see have some sort of engine noise. It doesn’t matter how low the miles are either. I bet these guys only lease their vehicles so they don’t care about all of that trash running trough their motor. Someone else will own it soon enough. LOL.