Oil Change Issue.

[1stToyota]

Originally Posted by Kaotic Lazagna

Can someone verify what I'm about to say? I heard that new engines are pre-broken in before shipment/installation? True or false?

If they are then they missed my friend's XD because it sure did use the oil until she got 8k or 9k miles on the car.

Even if they test run them the motors are still pretty green when you get them.

[Kaotic Lazagna]

Originally Posted by 1stToyota

If they are then they missed my friend's XD because it sure did use the oil until she got 8k or 9k miles on the car.

Even if they test run them the motors are still pretty green when you get them.

Yeah, I still babied the engine until the break-in period was done. Better to be safe than sorry.

[1stToyota]

At around 8 miles a day it'd take him about 375 days to hit 3,000 miles; way too long under those conditions.

[jambo101]

Originally Posted by 1stToyota

If they are then they missed my friend's XD because it sure did use the oil until she got 8k or 9k miles on the car.

Even if they test run them the motors are still pretty green when you get them.

i was under the impression that they just built the engines with better machinery so tolerances were more exact these days so a shorter break in period is required.As for oil expiring ?hasnt it been in the ground for millions of years?which also makes me wonder why its so anti environmental to just dump old oil in a nearby field,wouldnt i just be putting it back where it came from?

[craigq]

Originally Posted by jambo101

As for oil expiring ?hasnt it been in the ground for millions of years?which also makes me wonder why its so anti environmental to just dump old oil in a nearby field,wouldnt i just be putting it back where it came from?

Just in case you are not joking:
1. Some reasons oil can expire are: oil specifications change over time, additive "fallout", heat/cold cycles, and contamination (i.e. dust, moisture etc.)
2. As a result of lubricating the engine the oil is carrying contaminants, combustion by-products, heavy metals, acids and other carcinogenic substances. Hence, it's not a good thing to be disposing of irresponsibly. It *might* enter the water table, or someone's drinking water, which isn't a good thing...

Now, I have no problem with using an oil that's 5 or so years old, as long as it met the specs for the engine and it didn't come out in clumps or have "stuff" at the bottom of the bottle...

[1stToyota]

Originally Posted by jambo101

i was under the impression that they just built the engines with better machinery so tolerances were more exact these days so a shorter break in period is required.As for oil expiring ?hasnt it been in the ground for millions of years?which also makes me wonder why its so anti environmental to just dump old oil in a nearby field,wouldnt i just be putting it back where it came from?

It's the short-trip driving that's bad on the oil's life, not a due date stamped on the bottom.