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WEEBEDNA
Unregistered
3/25/2001
15:46:21
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 Subject: Break-In Period and Synthetic oil
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Message:
I have 1000 miles on my 4.7 and did an oil change to a full synthetic oil. Someone said I should have waited a few more thousand miles before switching to synthetic because the engine won't break-in properly.
I don't see anything in the owners manual stating that synthetics cause problems with break-in.
Any opinions on this?
Thanks.....
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RonW
Gen III
 
3/25/2001
16:11:23
| RE: Break-In Period and Synthetic oil
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I changed mine to synthetic at 5,000 miles. The theory is: It takes time for valves and rings to seat properly. Synthetics are too slippery to allow that to happen. That's the theory. How much your engine is already broken in before you get it is only known by the manufacturer. There are some high performance vehicles that come from the factory with synthetic lubricants in them already.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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Mar
GenI
3/27/2001
23:27:23
| RE: Break-In Period and Synthetic oil
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Wouldnt worry about it. Just put regular oil in next time and wait till about 10000 km to put syntetic in. Its not that big a deal. I hear people all the time going its so bad your going to be burning oil. I ignore them. I made the same mistake in a 1999 durango 5.9 at 2500miles and now it is on synthetic at 340000 miles and still sounds brand new. The most damage comes from not properly breaking the motor in by driving hard.
MaRty
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CyberWolf
GenIII
3/28/2001
08:59:45
| RE: Break-In Period and Synthetic oil
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Check out The Engine Oil Bible.
http://www.geocities.com/chrislonghurst/engineoil_bible.html
There is a lot of good info about which oil to use.
'01 4.7 CC, 5 speed, Sport , 3.92 limited slip, Intense
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Bernd
GenIII
3/28/2001
16:37:18
| RE: Break-In Period and Synthetic oil
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Message:
Those "flush" additives have caused more damage than good. I've seen many engines that had higher mileage and after the flush, the sludge and hard deposits went through the oil galleys, in the block, and really caused a bigger mess.
With only 1000 miles (even 5000 miles) on the truck, don't worry about flushing anything...just change it and drive. Be Happy. :)
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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CyberWolf
GenIII
3/28/2001
17:53:58
| RE: Break-In Period and Synthetic oil
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Message:
I agree with Bernd. I have seen people blow their engines because they used the flush additives. Those deposits can clog oil holes and not allow oil to certain places. You won't have to worry about that because it is so new but you still shouldn't need to "flush" it.
'01 4.7 CC, 5 speed, Sport , 3.92 limited slip, Intense
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14wntr
GenII
3/28/2001
18:32:08
| RE: Break-In Period and Synthetic oil
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I installed M1 at 5K and am still using it today with no leaks or burnage! Did you notice when they changed the oil can to the newer style they removed the 25000 oil change interval? A long time ago I called the M1 lab and inquired about it because I let my oil go for at least 20K before a full change and he said that the formula was the same just they were concerned because too meany people were not changing the filter and adding a quart. Before anyone asks I do change the filter and add a qt every 3K.
92 4x4 5.2L Auto 3"FM K&N drop in
Guns cause crime like flies cause garbage!
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KJ
Gen I
3/28/2001
20:30:23
| RE: Break-In Period and Synthetic oil
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There is very little to no break-in period with current passenger car engine technology. Mobil 1 is the factory fill in some of the more expensive cars. My 4.7 was converted over at a few hundred miles with no problem whatsoever.
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Mar
GenI
3/29/2001
09:09:38
| RE: Break-In Period and Synthetic oil
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Message:
Kj you are right about the mobile 1 being added at the factory but so wrong about the break in period. There will allways be a break in period. Most of the parts are made buy people it the tool and dye buissness that make the parts the same way they did in the past. The only diffrence between today and yesterday is that we have better oils. But for those people that don't take care of there cars in the start. Watch out. Its still metel to metel and when you have metel to metel it allways needs to break in especialy on the newer aluminmum engines.
MaRty
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matt
Mechanic
3/29/2001
09:18:37
| RE: Break-In Period and Synthetic oil
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Message:
You should have waited, but it is to late now. DO NOT use a flush additive on you engine. Your engine will not break in which means the rings will not set there is nothing short of an overhaul but I would wait and see. At about 5,000 miles you should notice a slight gas milage increase and the truck should feel like it is a little more powerful. The synthetic oil is so slick it will prevent the rings from breaking in.
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hojo86
Unregistered
3/29/2001
14:49:33
| RE: Break-In Period and Synthetic oil
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So, just to clear things up here....(I changed to Mobil1 at 800 miles) should we drain the synthetics and go back to reg oil for a while??
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14wntr
GenII
3/29/2001
15:13:00
| RE: Break-In Period and Synthetic oil
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Message:
It wouldnt hurt. Just store the M1 so you dont waste your money.
Guns cause crime like flies cause garbage!
92 4x4 5.2L Auto 3"FM
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Python97
Unregistered
3/29/2001
15:48:09
| RE: Break-In Period and Synthetic oil
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Message:
I got my truck brand new from the dealer. 2001 QC. It came with mobil1 Syn. You r telling me that its not going to break in correct?? I have 3200 miles on it now and it has had nothing but synthetic since I bought it. I think regardles of the oil the engine is still going to break in.
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KJ
Gen I
3/29/2001
15:52:34
| RE: Break-In Period and Synthetic oil
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I'm not trying to start an argument but I have a respectful question for everyone. If it's impossible to seat rings and bearings with synthetic oil then why haven't we heard of massive recalls on Vipers, Porsches, and Corvettes for oil consumption and burning? These along with Aston Martins and Mercedes come from the factory filled with Mobil 1. I would appreciate any thoughts on the subject.
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14wntr
GenII
3/29/2001
16:10:30
| RE: Break-In Period and Synthetic oil
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Message:
Thats it, just point me to the ass to kick! :-) It will break in eventually. I tried what you are talking about on a Mazda truck I had before the DAK. It took that thing about 52K before I started to notice an increase in performance and mileage. M1 from day one. It ran fine, just better after 52K. I blame the oil.
Guns cause crime like flies cause garbage!
92 4x4 5.2L Auto 3"FM
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RonW
Gen III
3/29/2001
19:59:10
| RE: Break-In Period and Synthetic oil
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Message:
Answer to KJ: A lot of high performance vehicles get their initial engine break-in from the factory.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
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KJ
Gen I
3/29/2001
20:33:31
| RE: Break-In Period and Synthetic oil
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Message:
Thanks for the note. What about Python's new Quad Cab? Any thoughts?
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Python97
Unregistered
3/29/2001
23:57:40
| RE: Break-In Period and Synthetic oil
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Message:
Thanks KJ, Are there any thoughts. Is it gonna
take my truck 50,000 to break in? That sounds
strange to me.
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matt
Mechanic
4/01/2001
11:35:19
| RE: Break-In Period and Synthetic oil
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Message:
Its going to take a while if ever. Yes some high per. come with syn in them. They have been broke in at the factory, your truck has not.
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bill k
GenII
4/01/2001
15:28:33
| RE: Break-In Period and Synthetic oil
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Message:
bull coky'synth oils will not hamper your break in ihave a 96 dack 4x4 that is full synth since day 1 dealer instaled,eng trans transfer case diff,s 85k still runs like new ,even starts great at minus 25 celcius,same battery
easy rider on 31,s
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12GA Dak
GenIII
3/12/2002
14:05:42
| RE: Break-In Period and Synthetic oil
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Message:
this is some confusing sh*t for me and it seems important so i want to understand it. first, i have just over 1,000 miles on my '02 dak and i have not changed the oil yet. 1) should i change it now or wait until 3,000 miles per the manual? 2) do i go synthetic now or wait until the dak hits 5,000 miles?
2002 Black QC Sport 4x4, 4.7L, 5-spd, 3.92 LSD
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Bluethunder
Dodge Dakota
JOIN HERE
3/12/2002
14:09:38
| RE: Break-In Period and Synthetic oil
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Message:
well,
1...I would change it now.
2. I changed over to synthetic at 1000 miles, but people say not to, so to play it safe wait to go with the synthetic
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CW
GenIII
3/12/2002
14:42:31
| RE: Break-In Period and Synthetic oil
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Message:
I just waited until 3000 mile mark then changed the oil. I went to synthetic while I was at it. There is no special break in lube that they use from the factory just good old dino 5w-30.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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Clevite 77
Dodge Dakota
JOIN HERE
3/12/2002
15:34:55
| RE: Break-In Period and Synthetic oil
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Message:
Changed mine at 540, again at 2,976 with normal oil. Now at 5800 or so I now think the motor has had a good chance too break-in, and I'll be switching over to synthetic.
I would change it with normal oil, just to get the break-in metal out, then at 3,000 or 6,000 change to synthetic. Just my opinion.
For the records, isn't it a bad idea to switch back and forth from normal to synthetic?
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Art
Dodge Dakota
JOIN HERE
3/12/2002
15:43:11
| RE: Break-In Period and Synthetic oil
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There is very little break in needed when machineing is done properly.Valves no break in at all,once the guides have been reamed thats it they will only wear normally,crank once its machined good or bad the bearings will take the shape of the crank in seconds of running,cam will take take shape in a half hour.Now the ring seating in the cylinder takes little break in aswell because all good machine shops and the factory use a deck plate when the block is bored and honed to finall spec.The boring plate is a heavy metal plate that is bolted to the block and tourqed to the specs of the head bolts to simulate the heads being on and then the block gets bored and honed so it is almost exact,then it takes less than 500 miles to get the rings seated when machining is done this way
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xplikt
Dodge Dakota
JOIN HERE
3/12/2002
19:49:09
| RE: Break-In Period and Synthetic oil
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I switched to M1 10W30 synth. at 600, and now at 3400 I plan using it again.
So much hocus pocus to this oil thing. Are you all really in that much of a hurry to wear..I mean, "break" your engine in? Also, don't forget the clutch, transmission, differential, limited slip, all those have to wear in too.
Either way, that synthetic really helped on those below 0 mornings this winter :)
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sandman
Dodge Dakota
JOIN HERE
3/12/2002
20:29:46
| RE: Break-In Period and Synthetic oil
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98% of all accelerated break in wear in occures within 600-800 miles of driveing. After this period the accelerated wear realy slows down. Today they use tapered rings that are chromoly plated on the top ring to help breakin and to prevent micro beads of steel from welding themselfs to the cylinder walls. Camshafts are heat treated deeper and alot of todays cams ride in a bath of oil. This helps prevent galling of the valve train parts. Most of this information about wear and alot more is availbe in a book by Sworski(SP) titled (Drive It Forever). He compiled alot of durability studies performed by GM, Chrysler and Ford in the 50's, 60's and 70's. All of this stuff about proper breakin takeing 5000 miles with convetional oil is realy exagerated!!! All of the new full size trucks that GM sells ship with synthetic oil in every part of the vechile. The engine, trany, differiental and transfercase! If you are realy concerned about it run semi-synthetic in it for a 1000 miles. I would not sweat it though. I have used synthetic oil sinnce 1989 and have never had a problem. I always put synthetic oil in around 600-1000 miles and have never looked back. Sytnetic does not eliminate friction and wear it just reduces it under some situations.
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xplikt
Dodge Dakota
JOIN HERE
3/13/2002
00:11:29
| RE: Break-In Period and Synthetic oil
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Drive It Forever is actually a pretty good book, I read that at my local libray one time. A bit old, but not much has changed and still a lot of valuable information. Would you honestly trust a non synthetic oil to start your brand new 1000-3000mi old truck on 0 degree mornings? I wouldn't...that same morning get some M1 and some non syth. and leave it out there over night...in the morning poor it out into the cap... THAT, will open your eyes a little bit more.
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