How soon/first oil change?

Status
Not open for further replies.
Originally Posted By: Mike_dup1
Those that say change oil before the OEM don't have any idea what they are talking about.


Hmmmmm, Guess I've known quite a few "uninformed" professional engine builders then.

As for modern engines not requiring a long break in that is false as well. Many new engines take a very long time to completely break in. My ecotec 2.2 just turned 15,000 and since about 14,000 the engine sounds and feels smoother and stronger and the mileage is up almost 2 mpg.

I have owned many new engines and for the ones I care about, the ones I at least plan to keep. They have all gotten a 500, 1000, 2,000 then normal OCI schedule. Maybe I'm just putting money in "Big Oils" pocket, but I'll continue to do so indefinitely.
 
Originally Posted By: mechtech2

More than a few engineers who work at large car mfr plants do not follow the standard advice for OCIs.



Very true, and telling in and of itself.
 
Decades ago it was 1000 miles.This day and age 2500 works.In fact on Hemi's the first oil change per the OLM is 2500.After that it settles into 5 to 6k.Lots of folks just run what the OLM says from brand new with no issues at all.I have a new 2010 Gran Marquis with 4.6.I have 1600 miles on it.Not even considering changing oil yet.Might run 3k first time.Might go further.
 
Originally Posted By: stockrex
I am confused, the shiny glittering metal pieces will run wild and ruin the engine? The filter fails to catch these ?
My personal view is no to ruin the engine, yes to run wild, and yes to filter fails to catch. In bright light the particles can be very very tiny but still seen. Lets say 20 micron, which to me is large, things are passing through filter. The filters are full flow, so it has always been a trade off between filtering ability and flow. Take 600 grit sandpaper, these particles are about 15 microns, and aren't that hard to see. The filter may or not be be catching those. There is the bypass filter section where people talk about better filtration. To ruin an engine would require a lot more I think, but for me anyway, I want the oil clean as possible. Not even sure UOA's are seeing the picture 100%, as particles this large and heavy would collect mainly on the pan, I believe anyway, and the sample is taken engine off, midstream or so.
 
A new engine produces metal particles like crazy. look at the FF OCI. But that is not all. You get the most fuel dilution ever during first 500 miles and oil gets watery. How about high level of silicon wearing the engine. Break in your engine in clean un-sheard oil. Some use up the FF up to 10k miles. Life is all about choices we make. Change the oil hot & often during first 10k until the wear gets steady. Use cheaper oil to save.
 
I used to wait till a good 5k. This time, I happen to know that the engine throws a lot of metal, so I drained it at 1k. Pan was full of glitter. I flushed it with a short drive on Delo 30 and am now in the process of doing two 3 month changes, before I go on my regular schedule of 4 months.

I'm glad I changed it early and that I flushed it before going further. The rinse oil even had a good bit of glitter in it....mower oil now.
 
Originally Posted By: LS2JSTS
Originally Posted By: Mike_dup1
Those that say change oil before the OEM don't have any idea what they are talking about.


Hmmmmm, Guess I've known quite a few "uninformed" professional engine builders then.



These engine builders are giving advice based on engines they have built, which is a different scenario than a factory assembled engine. A factory built engine is going to be a lot cleaner, and doesn't necessarily need to have it's first oil change done super early. An engine built by hand in a local shop is going to have a lot more contamination (more dirt, lots of assembly lube, etc.) in it's first batch of oil and I'd definitely change that oil extremely early, after less than 100 miles actually! I'd do another oil change pretty soon after that as well (maybe another 500 miles later)

But a factory new engine, I'd probably wait until 2 or 3k (maybe even longer depending on the vehicle) and I am sure the UOA would show that to be a safe first interval.
 
I just bought a 2010 Tundra with the 4.6l and they told me every 10,000 miles for an oil change. I am thinking of doing my first change at 2000 miles and every 5000 after that. It takes 7.9 qts of 0w 20 synthetic
 
Gee, thanks for all the comments guys! I think I'm going to change the oil at 1,000 miles, just to be on the safe side. Then I'll probably change it every 3,000 to 4,000 miles after that. It has an oil change message on it's computer thats supposed to tell you when you're 500 miles from needing an oil change. I think it's supposed to monitor your driving style and adjust the oil change interval accordingly. I don't know how accurate the monitoring system is though. If the oil change message comes on before I reach my 3-4K interval, I'll go ahead and change it but if it doesn't come on, I'm going to change the oil anyway at 3-4K. Sound reasonable? I intend to use Mopar MaxPro 5w20, which is the recommended oil. The Mopar, I found out, is Pennzoil synthetic blend.
 
Originally Posted By: tr4petty
I bought a new 2010 Jeep Liberty Ltd a few weeks ago and joined the online Jeep Forum group to learn more about it from other owneres. So far, with 656 miles on the odometer, the wife and I are loving this small but very solid feeling SUV with it's 3.7 V6. My question is about the first oil change. On the Jeep Forum site, most of them seem to encourage changing the oil very soon the first time. Some said after only 500 miles, which I've already past! Most say to change by the 1,000 mile mark. Then, of course, start using a standard oil change of interval of 3 - 5,000 miles. Is there any science behind this suggestion of quick "first" oil changes?


I have an 08 and love it. Here is what I did, at 500 miles I changed the oil and filter, using dino oil, and a Pure One Filter, cost watching sales ~ $15.00. I ran that until I had 2000 miles, switched to synthetic oil, which I now change every 6 months. For the cost of two shortened OCIs I know I got a lot of the junk out of the engine. When you figure the cost of the vehicle with tax, what I did cost peanuts. To some it is a waste, to people like myself it was well worth it. I'd never argue with anyone either way. You want to save some money? Leave the oil in until a 1000 miles then dump it with the filter.


As far as the OLM it doesn't comply with the warranty for my driving style. First OCI is programmed as a shorter OCI, but the light came on 11 months after I bought the vehicle, the light went on at 2602 miles. The warranty calls for 6 month, 6000 mile OCIs. The second time the light came on was 21 months later and 7748 more miles were driven. Again not in sync with the warranty requirements for my driving habits. It has not come on a third time yet, I bought it in December of 2007.

I ignore the light,
27.gif
and change the oil at 6 months or 6000 miles as per the OM. Perhaps GM's system is better or Chrysler has improved theirs for model years 2009, 2010.

They can program in driving habits, engine on time, miles, and 6 month time frame if they wanted to. JMO
 
And other times it does. Toss a coin, drain it early or leave it in. For me the peace of mind was worth the $15.00 and Jeep doesn't use a high moly break in oil. I checked to make sure.
 
demarpaint, according to my DVD/owner's manual, driving habits, idling time, miles, etc. are programed into the engine oil monitoring system. On the 2001 Grand Cherokee that I traded in, I just set the system to tell me when 4,000 miles had elapsed since the last oil change and it would chime and turn an "maintenance req'd" message on at that point. This system on the 2010 Liberty is more of an "intelligent" system that monitors driving habits and adjusts oil change intervals accordingly. If it is accurate, I would guess that it is a pretty good system to follow. But, I've always been a bit on the conservative side when it comes to oil changes; cheap insurance, I think. I change my own oil so it's not that expensive. Like I said, I've decided to go ahead and change it the first time at 1,000; then about every 3,500 miles, unless the oil monitoring system tells me to change before that. This may be overkill but I can't imagine that it's going to hurt anything!
 
Status
Not open for further replies.

Similar threads

rstcso
Determining the Proper Oil for Your Engine - Email from Lake Speed Jr
4 5 6
Replies
115
Views
6K
53' Stude
D
What oil viscosity for L8T engine in 2026 GMC Sierra 2500 and OLM change intervals?
Replies
4
Views
340
Bighorn2500
Z
Subaru BRZ First Oil Change - Synthetic at 1000 kms ?
2
Replies
36
Views
2K
zeroptzero
B
What would you run? '25 Ford Ranger Raptor, 3.0 Ecoboost, Twin-Turbo V6 - 5w30
2
Replies
39
Views
1K
walterjay
B
2025 Honda civic type R - first oil change
2 3
Replies
44
Views
4K
Glenda W.
Back
Top Bottom