A friend and neighbor, who is a retired engineer and has knowledge and experience with things mechanical, including cars, told me just now that he broke in his 1999 Ford 150 Lightning truck by changing the original factory oil at 1000 miles and then again at 2500 and then at
5000 and has kept to 5K, with synthetic, for changes since.I know that engines are machined to greater tolerances than those of
20 years ago, which then included a free dealer oil change at 500 miles to flush out the metal filings etc, but would you agree that it makes sense to use a break in sequence, such as this, at this time, with our new Toyota 4Runner - rather than the published approach, which is to just do nothing until 5k miles and then change to Synthetic, if I wished to ?I don't mind the extra expense, even the cost of synthetic, and filter changes, in exchange for any benefits that breaking in in a preferable way would provide, if they so exist. It is possible that such a break in sequence would be a bit too daunting or complex for non machine minded consumers and Toyota, although it might so prefer it this way, just leaves the change at 5K miles to simplify things.
Thanks,
Forrest