People saying to change your oil at 1000 miles on new vehicle.

[captainbeandip]

I have read on a different forum that Honda (and probably some other auto manufacturers) don't want the 1st oil change done early because they use some type of moly assembly lube that they want circulating through the engine during the break-in period.

 

[ctechbob]

In the absence of break in oil, the extra abrasion may help bed in the piston rings.

That's why Honda says not to change early.

I wouldn't be surprised if people who changed early got oil consumption.

Nothing to do with the rings. Those seat fairly quickly. Honda doesn't want you to change the original oil because it is usually loaded with assembly lube.

I'd have to look back at my records, but I bought my 03 Accord new and changed early. It still doesn't use much oil at almost 300k. Maybe a qt over the 7500 OCI I use now.

 

[cheesepuffs2]

No need to explain the obvious.

Hahaha

 

[Astro14]

No need to explain the obvious.

Not really that obvious when you look at the premature engine failures blamed on machining debris by Hyundai, Kia and Toyota.

 

[oldcodger]

I wonder if the owners of Kia/Hyundai who did early filter/oil changes have avoided the engine failures. Can't really know but makes me wonder.

 

[HemiBenny]

I used to change the factory fill out early, but I changed that mindset with the 2015 Chrysler 200 and most recently with the Mazda CX50. The Chrysler is at 160k and the Mazda is still a young one with just over 11k.

 

[BillyHW]

In the absence of break in oil, the extra abrasion may help bed in the piston rings.

That's why Honda says not to change early.

I wouldn't be surprised if people who changed early got oil consumption.

How does extra abrasion help bed in the piston rings?

 

[SC Maintenance]

Way back in the day the users manual did say to change early - I am talking 60's / 70's maybe. Like 500 or 1000 miles.

There may be many reasons why they don't do so now, but there absolutely is a lot of debris in the first 1000 miles. Its not "left over", its break in where - from imperfect parts rubbing against other imperfect parts - like bearings and seating in piston rings on the bore. These parts all have a tollerance, and their designed to wear in to the exact machines surfaces with which they match during early use.

In theory they oil filter should catch that, but as mentioned, if you want to rely on that feel free, but some of us don't.

Many small engines still have a break in spec / time, probably because they have no oil filter.

 

[SC Maintenance]

In the absence of break in oil, the extra abrasion may help bed in the piston rings.

That's why Honda says not to change early.

I wouldn't be surprised if people who changed early got oil consumption.

Honda used to claim to have a special factory fill. The manual stated such and they wanted you to run it for a full run. What exactly was in it, I do not know. Maybe someone here does.

I believe they have removed this verbiage from there manual now for some time. I don't own a Honda, just what I have read elsewhere.

Debris wouldn't help break in anything - its too disparate / shaped wrong to have any specific abrasive properties.

 

[Snagglefoot]

I took my first oil change to the full OLM on my 6.0 Chev engine and it has 260,000 miles and doesn’t burn oil. The filter picks up anything that might have come loose.

 

[cheesepuffs2]

How does extra abrasion help bed in the piston rings?

Exactly. What seats the rings is the cross-hatching on the cylinder walls. There is no benefit to extra abrasives in engine oil.

 

[cheesepuffs2]

This testing was done with motorcycle engines, but I think people in this thread would find it interesting:

 

[ctechbob]

Exactly. What seats the rings is the cross-hatching on the cylinder walls. There is no benefit to extra abrasives in engine oil.

That and combustion pressure. Engine has to be loaded/working for them to seat well.

 

[fdcg27]

Not really that obvious when you look at the premature engine failures blamed on machining debris by Hyundai, Kia and Toyota.

There will always be edge cases and in these the amount of debris apparently left through faulty process control would have damaged things beyond saving in the first thousand miles.

 

[wpod]

In the absence of break in oil, the extra abrasion may help bed in the piston rings.

That's why Honda says not to change early.

I wouldn't be surprised if people who changed early got oil consumption.

No that is not why.

 

[Dinoburner]

Mentioned to the salesman I`d be back in a 1,000 miles to have the oil changed in the then new 16 Equinox and he got riled and said do not do that, something about disaster. Made to 2,000 mi and had it done without any histrionics from the lube shop.

 

[Glenda W.]

I’ve always done the first change early. Sometimes I find debris in the filter. I really don’t care what the manual says considering it also states my transmission has lifetime fluid…..

 

[wpod]

What proof is out there for these people to say you need to do your first oil change at 1000 miles for longevity, when the does not have anything in it?

Actually a new engine has them most wear per mile that it will ever have until failure as the clearances increase the wear increases.

 

[MolaKule]

What proof is out there for these people to say you need to do your first oil change at 1000 miles for longevity, when the does not have anything in it?

I have always run the vehicle for 500 miles before changing the oil and filter.

If not sure of your after run-in OCI's, always use the Severe Service schedule as outlined in your Owners Manual.

 

[MRC01]

How does extra abrasion help bed in the piston rings?

The cylinder surface is cross-hatched in order to make it "wettable" so oil doesn't bead like it would on a smooth surface. The increased friction scrubs off the tips of the cross-hatch while leaving the valleys intact. The following video is for aircraft engines, which are still made the way car engines used to be made, and explains the concept.


Note that this is largely moot for modern cars.