Rebuilt 5VZ-FE: Oil Change after 500 Miles?
Hi Everyone,
My mechanic recently rebuilt my 1997 SR5 5VZ-FE engine. My mechanic says they only want to visually inspect my 4Runner after 500 miles. However, I see online that some suggest an oil and filter change after the first 500 miles. What is the best practice here? I'm happy to save a few bucks, but I also don't mind changing the oil and filter early if that's going to keep my rebuilt engine healthy. Thanks in advance for your advice! |
500-1000 miles on a rebuilt street engine is good. There's no hard and fast rule. Let the shop do their visual check, then you do a visual (and put a wrench on every bolt you can find to make sure it is tight) and oil change when you can between now and 1k miles.
-Charlie |
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You may also want to read up on engine break-in best practices. There are techniques to help ensure the rings seat into the cylinder walls the way they need to. |
I would for sure change the oil at 500. The two engines I have rebuilt, I used driven br30 break in oil and dumped it at 450. An actual Toyota mechanic I know told me he likes to dump the oil after cam break in, so like 20min run time, then again at 500. The new engine in a way is machining its self as those new parts start working together. You want to get those metal particles and contaminants out of there. This is my understanding anyway, I'm no expert.
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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. Sent from my iPhone using Tapatalk |
Wouldn't hurt, an early oil/filter change is cheap if you look at the big picture. My brother and I put in a zero-mile rebuilt engine, drove it 90 minutes to the track the following morning, then changed the oil once it cooled down enough :happy:
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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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Ever since I ran into the alternative break in site 20 some years ago this is what I’ve been doing. I should do a compression check now that I have over 30k miles in the new engine. I know It’s ambiguous, but my ScanGauge HP meter says 220hp. It is the most frisky 3.4l I’ve driven. And I only have 4.10’s. The limited had 4.30’s. Sent from my iPhone using Tapatalk |
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The oil change just prevents anything bad from happening from may be carried in the oil. |
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-Charlie |
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That’s one of the reasons I heat cycle the engine three times to look for leaks and then dump the oil with the assembly lube and replace the oil filter. Sent from my iPhone using Tapatalk |
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