Why though? and don't give me that it takes too much time because you did take the time to pick apart my post. For someone that should have a vast knowledge of this stuff it shouldn't be hard to list trouble areas that arise, not in the engine, when you don't properly change the oil.

If anything, it would be good to know because I know I'm not the only one that would like the information. So, yes I'm asking you the question, no one else because no one else seems to be as qualified.That's not analogous to what we're talking about.

 

ah don't get p at hddp he's still p at all the soo baa roos beating him.

 

Not analogous as to what you are talking about?? Hmmm.... let's see..let's look at your second paragraph!

Common auto problems...like scored cylinder walls, wiped main and con rod bearings, worn cam lobes, valve train failure...etc.. But since you've never experienced any of them than they must just not happen!

In my time here I've found HDDP to be quite fair and very knowledgeable. Not to mention the fact that he's ACTUALLY torn apart these 3.2's of ours! I've worked with and on cars my whole life, I still value the opinion of someone who has more experience than me on any given topic.

 

http://extension.usu.edu/files/publi...heet/FM-19.pdf
http://www.carbibles.com/engineoil_bible.html

 

The funny thing about not changing oil is that often the damage occurs in smaller increments. Unless you seriously let your oil go for very long periods of time, it's not going to immediately blow up on you. It can happen, of course, as I have seen when I worked in a machine shop back in the day. But what normally happens is that your bearings, rings, cam lobes, valve guides, valve stems, etc. etc. all wear more quickly as your oil begins to break down and becomes less viscous. This can result in a number of things happening which may or may not coincide with whether there is old oil in your engine at the time it fails because engines are wearing all the time, whether they have new or old oil in them. They just do it faster when old oil is in them.

I hate to say it, but it is very analogous to the effects that smoking has on the formation of cancer cells in the body, which allowed the cigarette companies to claim for so long that they could find no link between smoking and lung cancer. Sometimes, people can smoke 2 packs a day for 20 years and no cancer. Some smoke two packs a month and die in a year. Same is true of engines and engine oil.

 

Fortunately for me my dealership was offering a promotion for free oil changes so I don't have to shell out the $100+ for it. Anyway, the stick they put on my window is the 3 month/3,000 miles which is definitely overkill for synthetic oil. And you guys are right, it only needs to be done ever 7,000 miles or so.

 

Hmmm... promotion for free oil changes + Crossfire (expensive filter and 8.5 qts of syn Mobil1 0w/40) + 3k window sticker = are you "sure" they're using the right oil?

 

The "free" oil changes they were doing at my local dealership had a small disclaimer at the bottom of the letter. Basically they excluded, Crossfires, Vipers, or any car with a HEMI!

 

I never said they don't happen, I've just never experienced any problems you all have stated when you go a little over (or a lot over sometimes) on oil changes. Maybe you all have back in the day and maybe engines are a lot better, or we've just been lucky to not have engine that a **** on us, but don't put words in my mouth and say they NEVER happen cause I know they do.Very informative, thanks.

 

I ask him what oil they would be using because I was planning on buying my own and he told me mobil 1. As for whether I'm "sure" if they're using the right oil... I'm not entire sure how to answer that question. You can't use anything other than synthetic and it's pretty obvious if they used something else, I would notice right away and they would more than likely have a good insurance claim to process.

I bought my car as a lease off at a GM dealership (the only one on the lot). They were offering this promotion for all cars on the lot including mine. Changing the oil in a Chevy is much less expensive than in our cars with out a doubt so I guess I lucked out.

 

[quote=RBeatYou can't use anything other than synthetic and it's pretty obvious if they used something else, I would notice right away and they would more than likely have a good insurance claim to process.[/quote]Don't be too sure. I ran into this issue with my dealer the first and only time I had my oil changed by the dealer. I made the appointment, specified the oil, and verified the cost before my wife too the car over for it's first oil change since I was at work. When I called her up to ensure that they only charged her what I was quoted and not more, she told me that it came to about a 1/3 of what I told her. I called the dealership and found out that they put in their standard Mopar oil NOT Mobil 1 0-40W. Their comment was that it is only recommended not required. Boy was I pi$$ed and made them flush and change it with Mobil 1 on their dime. Plus I requested that they document they screwed up. Since then I have been changing my own oil.

 

Setting a mileage for time to change the oil is in some ways seams to odd to me... as for different people doing different driving the mileage varies... I do a lot of severe driving doing no longer than 5 mph trips and sometimes stop and go traffic, other times i am pressing the car hard doing driving at night, I change my oil usually between 2.5-3.5k miles and it seams some what overdue by this time... while others claim 7k mile intervals...

You purchased a performance low end exotic treat it like one and change the oil correctly...

As for Gator's statement there is some truth to the statement about visually nothing going wrong... My cousin had a diesel 5 series and he changed the oil um... maybe every 15k+ miles and the damn thing would not break... than he purchased a Grand Caravan and he drove about 30k miles in 2 years I really doubt he changed the oil... and after that he sold the car and nothing in it went wrong...

The damage caused by lack of quality oil running through your engine is cumulative... you can eat Fast food today tomorrow and the whole next week it might not make an impact as significant on you as it may on some one else, but regardless eat fast food for a few years and you will not only be Fat you will also have bunch of other disease and giving you 1 example is pointless cause just about everything is effected by it...

The car as well his cars did not deteriorate to a noticeable condition fast enough he just got rid off em before they did... and the example of smoking is very relevant here, to some like my cousin changing oil is not worth the hassle and to some smoking is very worth its negative effects...

If you choose not to change your oil or follow ridiculous intervals that is entirely up to you, but be aware that this is putting your vehicle under risk and pressure...

 

Wow... that's rough. Thanks for the heads up on that. I actually know the body shop manager and the owner of that particular dealership so they tend to take care of me when I go in. For future notice though, it's good you told me that. I love how dealerships always try to shortcut everything, so scummy.