I can't agree more in…
I can't agree more in regards to early oil changes. In the old days there was a break in period as as far as speed was concerned in New vehicles. I recently purchased a new Toyota Venza was told 1st oil change due at 10,000 miles NO WAY JOSE.
I had it done at 4,500 miles and most recently at 9,500 will now let it go for 5,ooo miles and look at color of oil on dip stick. I have found this to be a good measure depending on how you rack up the miles. So important to keep it clean to extend the life of the engine.