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Chrysler Town & Country and Dodge Grand Caravan 2005+

1422 messages,  Last post on Sep 25, 2009 at 8:55 AM

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What is this discussion about? Chrysler Town and Country, Dodge Grand Caravan, Van


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#1088 of 1422
Re: Catalytic Converter Life, Oil Consumption, and SM/GF4 oils [micweb] by frogger123
Feb 01, 2006 (2:33 pm)
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Replying to: micweb (Feb 01, 2006 11:09 am)

Boy Micweb - what a rendition with some very thought out advice - I'm impressed! Gives me alot to consider. Thanks Castrol 5W30 is a SM rated oil - I double checked. I won't worry about my CAT. I will really consider using Mobil 1 when my castrol is used up - probably in 6,000 more miles. Castrol has become pricey & I am considering switching to chevron or conoco for my 1993 chev pu 350 when my castrol supply runs dry. Two more questions for you Micweb. First, I have been using castrol in my 93 chev pu for about 65,000 miles. PU has 123,000 on it now. Do you think it is wise to switch to conoco or chevron now? There is quite a debate about switching oils due to additives and mileage on an engine. The second question is, at what mileage do you think rings are fully seated in a new engine. As stated before my 2005 GC 3.8L engine has 24,000 miles on it. If I drive hard once in a while i.e. get up to 5000 RPM once in a while in the next 1,000 miles or so, could the rings have a chance to seat better?
#1089 of 1422
Re: Catalytic Converter Life, Oil Consumption, and SM/GF4 oils [frogger123] by micweb
Feb 01, 2006 (4:46 pm)
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Replying to: frogger123 (Feb 01, 2006 2:33 pm)

You can switch oils pretty much anytime. I don't like to switch oils at every oil change, for just the concerns you describe (the possibility of battling additives), but I have come a long way from doing double Mobil 1 oil changes at the same time to "flush out" residual dino oil in my vehicles. If your PU has 123,000 miles, why not keep it on Castrol? The difference in cost is negligible (compared to other costs of ownership), and that way you'll really know just how good the Castol is. At this point, I'd say "good enough!"
 
As to seating the rings, my understanding is that this is done, or not done, in the first 600 miles of driving - there are, as I recall, some crosshatching on the factory cylinder walls to help them scuff in. Even if your 24,000 miles is a typo (did you mean 2,400?) the rings are probably no longer an issue; but "driving hard once in a while" and varying speeds during the first critical 600-1,000 miles are definitely a good idea. I personally try to avoid full throttle until I hit 3,000 miles, but will use up to 3/4 throttle to hit high rpm, once the car is FULLY warmed up.
 
I have also noticed engines continuing to break in over the first 10,000 miles, so something is definitely going on even after the first 600-1,000 miles, and long term car tests in the magazines often show performance increasing (not decreasing) as their test vehicles approach 15,000- 30,000 miles.
 
I guess the total break-in process is a lot longer than we think, but at least our ability - as drivers - to harm the vehicles is a lot less after the first 600-1,000 miles.
#1090 of 1422
Re: Catalytic Converter Life, Oil Consumption, and SM/GF4 oils [micweb] by jipster
Feb 01, 2006 (6:09 pm)
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Replying to: micweb (Feb 01, 2006 4:46 pm)

"avoid full throttle until I hit 3,000 miles"
 
Curious as to anyones thoughts on reliability with Caravans(or any van)that have been rentals and are usually sold to the public at around 20,000 miles. Much is said about proper "break in", yet usually people(myself ) who rent autos are pretty hard on them from the get go(i.e frequent and heavy throttle, usually long trips at a constant high speed)...or as some say "they get ragged out" Keeping this in mind, it seems to be a bit risky in buying a rental.
#1091 of 1422
Re: Catalytic Converter Life, Oil Consumption, and SM/GF4 oils [frogger123] by shipo
Feb 01, 2006 (6:37 pm)
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Replying to: frogger123 (Feb 01, 2006 2:33 pm)

Engine break-in is a wierd thing to say the very least. On my last two BMWs (both with the I6 engine) I noticed very little change (if any at all) beyond 2,000 miles, however, for both of our 3.8 liter there were very noticable gains in both performance and fuel economy to beyond the 20,000 mile mark.
 
Regarding your rings, my bet is that the compression rings are fully seated and there is nothing more that you can do with them shy of pulling the motor and rebuilding it (not that I'm suggesting that, it sounds like they're doing just fine). When I was mentioning your rings earlier it was in reference to your oil rings, and they don't "seat" in the conventional sense. They are however very suceptible to getting cruded up, and that means that they aren't scavenging the oil off the cylinder wall as effectively as they should.
 
Given the relatively frequent oil changes that your van has had I'd be a little surprised if you had an oil ring problem, in spite of the Quaker State oil that has been used. Then again, maybe that stuff really is that bad.
 
To bring this discussion full circle, I simply don't think you have anything to worry about with regards to your oil consumption. My bet is that if you keep your van properly maintained, you'll see well beyond the north side of 100,000 miles as still won't see your oil consumption drop to the point of concern (i.e. 1 quart per 1,000 miles).
 
Best Regards,
Shipo
#1092 of 1422
Re: Catalytic Converter Life, Oil Consumption, and SM/GF4 oils [shipo] by frogger123
Feb 01, 2006 (7:41 pm)
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Replying to: shipo (Feb 01, 2006 6:37 pm)

Shipo & Micweb - thanks for all your thoughts & discussion on these subjects - enlightening as well as fun! Regards, Frogger123
#1093 of 1422
05-06 Overhead rail bins by gctony
Feb 02, 2006 (7:33 pm)
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I found out that extra bins for the overhead rail system are indeed $140 (yes 140) PER BIN...Vans equiped with the system have room for 2 or 3 more (as noted in sales literature)..SO $280, or $420 EEEEEEEEK
 
Where can I find a wreck?
Tony
#1094 of 1422
Re: 2005 Grand Caravan 3.8L Oil Consumption [frogger123] by genetuck
Feb 03, 2006 (12:56 am)
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Replying to: frogger123 (Jan 31, 2006 7:50 pm)

The specifications are what is important when it comes to engine oil......in other words, the letters on the can that tell what service it is rated for. The brand is not important. For years I have used the Walmart house brand, "Super Tech", with very good results. Before the Walmarts arrived I used various brands, mostly Sears. I generally run cars about 160,000 miles or so before buying a new one. Just make sure you use an oil that has an American Petroleum Institute seal on the label or top, and it should have a rating of SM. That is the API's top rating for gasoline engine oils. If it says "SM" and has the API mark it meets the DaimlerChrysler MS6395 specification. The can may also have some lesser ratings, like SL or SJ, but as long as it has the SM you are safe. By the way, if you see a service rating starting with c, like CI, CH or CJ, that is for diesel engines.
#1095 of 1422
Re: 2005 Grand Caravan 3.8L Oil Consumption [genetuck] by genetuck
Feb 03, 2006 (9:43 pm)
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Replying to: genetuck (Feb 03, 2006 12:56 am)

By the way, at 141,000 miles, my 98 Astro Van is now getting the best fuel mileage ever......19 to 20 mpg with mostly highway driving. Nothing to brag about, and I'm hoping to beat that by three or four miles with my new SXT. My first two tanks averaged 22 mpg, but I'm expecting improvement as the engine loosens up.
#1096 of 1422
Re: 2005 Grand Caravan 3.8L Oil Consumption [frogger123] by marine2
Feb 03, 2006 (11:33 pm)
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Replying to: frogger123 (Jan 31, 2006 10:07 am)

I have a 2005 DGC and it isn't using any oil. Doesn't the cap on your oil dipstick tell you to use 5W20?
#1097 of 1422
Re: 2005 Grand Caravan 3.8L Oil Consumption [genetuck] by shipo
Feb 04, 2006 (8:59 am)
Reply

Replying to: genetuck (Feb 03, 2006 9:43 pm)

"My first two tanks averaged 22 mpg, but I'm expecting improvement as the engine loosens up."
 
Both of our DGCs showed noticable power and mileage improvements through 20,000 miles where things pretty much leveled off. That having been said, with 106K on one van and 58K on the other, both seem to have marginally improved since then. I say "seem to" simply because a half of a mile per gallon is hard to prove given all of the other factors that could be in play here. At this point, our 1998 3.8 is able to do about 24 mpg on the highway and our 2003 3.8 is more like 26. Of course a few weeks ago we had some "Hurricane force winds" one evening, and on that drive home I got 11 mpg at a steady 65 from the 1998 (I knew it would be bad so I reset the OBC so I could see just how bad). The good news is that the next morning, even though the winds had died down to a nice 20-30 knot breeze, I managed to get 28 mpg for that same 40 mile commute back to work.
 
Best Regards,
Shipo

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