Quote:
Originally Posted by 19963.4lsr5
When I put the fresh engine in my SR5 I heat cycled the engine three times and then dumped the oil and filter. Then again at 500 miles.
During the first 20 miles I did a bunch of 30-60mph accelerations at 3/4 throttle to help seat the rings before all the flashing gets knocked off the fresh cylinder walls.
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Mid-RPM coasting (say, keep it in "2" on the auto or 2nd or 3rd in the manual) is just as important for this break-in method. High engine vacuum seats the coast/vacuum side of the rings to minimize oil burning and maximize sealing just as much as the mid-power and rpm accelerations.
That is probably pretty much what I would do if I did a fresh engine though. (and have done with built engines in the past - new cars I wait until 1k for the oil change) Since the OP is already at 500 miles, just do the oil change and check things over closely and move on. Luckily the 5vz isn't some high-strung race motor...
-Charlie
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'99 4Runner SR5 Auto -
4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
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