Is it ok to switch from syntetic back to conventional?
 

Well shortly after buying my car, I starting adding Castrol Syntec syntetic oil(at 79K,..I have 96K now). I change my oil every 3K miles. To be quite frank, buying this high dollar oil it killing me.

My question is....Is it ok to switch from my current oil to a conventional oil(Castrol GTX)?

I change my oil at 3K, but I've been told that with syntetic's it's ok to change it at 5K. Is this true?

you won't hurt anything... I'd rather change regular oil at 3,000 than change any kind of oil at 5,000mi.

Although I've never had personal experience with it, I have heard of alot of people that try to do that and it ends up using more oil than it did before.

If I were you, I'd try stepping down to some senthetic blend first.

Or better yet, hurry up and trash that motor in favor of a 302 :)

Ive switched back and forth several times(although not at long intervals between oil types) with no problems. They are compatible, so I dont see what all the fuss is about. Just do it.

SYNTHETIC VS. CONVENTIONAL
 

Hello All, I'm new to this board. You guys and gals need a good school lesson on the properties of oil, conventional and synthetic. To learn everything you need to know about motor oil, go to www.motoroilbible.com and purchase and download thier E-Book. You can then print it out, it comes out to about 84 pages I believe. Your wasting you hard earned money changing synthetic every 3,000 miles. Petroleum oil begins to break down almost immediately. A high quality synthetic, on the other hand, can last for many thousands of miles without any significant reduction in performance or protection characteristics. Synthetics designed from the right combination of basestocks and additives can last indefinitely with the right filtration system. I have tried several synthetic brands, and the best (in my opinion and experience) is Amsoil. Im currently running 0W-30 weight in my 93 COBRA (with only 8k miles on the clock) and in my 2 Subaru Legacys. Increase in Performance and fuel mileage is immediately noticed. I am not a mechanic nor claim to be one, but I have been driving for 22 years, and have owned 18 cars and trucks, so my experience in using different oils over the years speaks for itself. Well enough of me blabbing on, just go to the sight, and buy the oil bible, I believe its $19.95, you will be glad you did. The information in it is priceless.

No matter what kind of oil you put in your car, it will still get contaminated by the small amount of fuel that gets by the rings.
Whether its wal mart brand 10w30 or amsoil, it will still get contaminated.

so that said, I'll stick with conventional or a senthetic blend and change it every 3000

I 100% agree... oil is oil and it's still gonna get dirty. I use synthetic, and change it at 3,000 cuz I know it's dirty. Even if it's not broken down yet.

Re: SYNTHETIC VS. CONVENTIONAL
 

Thats the biggest bunch of bullcrap I have ever heard. You dont just happen to be an amsoil saleman, do ya?

I suggest you do more research before you make such ridiculous claims, and push some worthless "oil bible" for $19.95

That's funny, spend $19.95 to find out about motor oil! HA HA HA. I was having a long day at work, and that really made me smile :)

I might spend $19.95 if the guy who wrote the article will come over and change the oil for me! (Of course he would supply the magic oil too).

kids just dont understand
 

obviously your not interested in learning something, which is todays youth problem. Instead of wasting 20 bucks on a six pack and cigarettes, use it wisely and buy the motoroil bible and you will learn a wealth of information about something you have no clue about, except for all the myths youve read about. I have 250k miles on my subaru and Its run only on synthetics since it had 3k miles on it, and it runs as good today as it did then. We can take your engine apart with 50k miles and mine with 250k and mine will look brand new, and yours will look like the bottom of my gas grill. Start up is when most engine wear occurs. You see people all the time start their cars up on cold morning and immediately rev the engine. Your metal to metal baby, especially with your conventional 10/30-10/40 oils. Your engine begs for mercy as soon as your about to turn the key. Now on the other hand a fast flowing 0/30-5/30 great synthetic like Amsoil, and your engine will love you every time you turn the key, wether its 10 below or 100 above. Experience, there is no substitute. That's it for todays class children. Hurry, wal-mart is having a sale!

What makes you think for one minute that you know more about oil than anybody else on here? Because you read the oil bible? Lmao.....What exactly are your qualifications? Yeah, thats what I thought.

We have professional mechanics on this board who know a lot more about oil and engines that you ever will, so dont come here preaching your crap to us like were a bunch of stupid, easily influenced kids. Schools out...later

Did we learn anything today class?
 

A mechanic is not an expert on motor oil, he mostly likely knows as much or less than yourself. Next time you see your neighborhood Joe, ask him to define these oil qualities for you,

1. Viscosity Index

2. Low temperature performance

3. High temperature performance

4. Oxidation Resistance

5. Polyalphaolefins

6. Diesters

7. Polyolesters

8. Anti-Foaming agents

9. Detergents and Dispersants

10. Corrosion Inhibitors


And BTW I am not a Amsoil salesman nor have anything to do with them, I just know (thru experience) that Amsoil works best. Mobil 1 is also very good, but a bit behind the Amsoil when you break them down. An excellent Oil Filter is a must as well. Amsoil, and Mobil 1 Filters are the best. I suppose your gonna tell me I work for Mobil now ha smart A**!

Let's get something straight, all Im saying is that synthetic oil protects your engine better than conventional oil. Its not a guarantee that your car will never break down. Only guarantees in life are death and taxes. So before you all shoot me down, just listen for a second, its not as ridiculous as you all think. No hard feelins guys, was just trying to pass along some useful and knowledgable information.

Most people know that synthetic oil is better than conventional oil, and most people who are interested enough to care, know why.

You started this whole thing by some rude remarks implying how stupid we all are and that we dont know anything about oil, and we should educate ourselves and read some oil bible, blah, blah...not the best way to come across and make a point.

A point that wasnt even related to the question that started this topic.

Im not going to get into a long debate with you over oil, its properties, which is better, etc...

I have been working with and studying oil for a long time as a hydraulics specialist and I am well aware of the properties of oil, as are many car enthusiests who are here, and I dont think anybody appreciated your attitude that we were all "misinformed" about oil, which is not true.

The part I find funny is that you would even think for one minute that an educated person would spend $20 for an article on motor oil is ludicrous (if it is that good of an article my local library will have a copy).

Also, shopping at WalMart is not necessarily an indication of ones IQ - but my guess would be that anyone who spends $20 for an article on motor Oil is at the lower end of the spectrum!

Plus, I need to save my $20 for the upcoming release of "Girls Gone Wild Part VIII".

Lmao...excellent points. By the way, Im selling copies of "The Spark Plug bible" for only $26.99. And if you dont read it, you are an idiot and your car will not run well on the spark plugs that you have chosen. So send me your money fast.

This thread is hilarious, 93 VENOMIZED: you really came off on the wrong foot, acting like the ALL MIGHTY OIL GOD, and "assuming" no-one else knows anything about oil other than you. Kinda shady in my eyes, then look at what you said.

Before blabbing on and on, you should realize that people other than yourself have great knowledge of oil. Why do you assume that all "todays youth" just buy cigarettes and six packs? That's a screwed up stereotype if I've ever heard one. I'm well educated about motor oil, and I wouldn't waste my money on your "motoroil bible". I think your a bastard for saying that the people on this board have no clue about oil and it's properties. How do you know your engine will look better than mine, yours having 250k, and mine having 50k? YOU DON'T. Then you say that mine will look like the bottom of your gas grill? WTF. Your just rude. I suggest that you buy the "I need manners bible" , you can purchase this at www.Ineedmannersbible.com for $19.99, instead of wasting your 20 bucks on a crack pipe , and KY Jelly for those lonely nights. Use it wisely and buy the "I need manners bible" and you will learn a wealth of information about something you have no clue about, except for all the myths you've read. I think you really need to learn better "people skills" and you might sell more of your POS books. From your posts I've read, you seem to "assume" alot, and that my friend is what gets people killed, or in alot of trouble. :eek:

This is the problem today, everybody has an attitude and takes things the wrong way. I never implied that everyone in here was dumb, just misinformed about oil qualities, just as I was. I was under the same impression that you had to change your oil every 3k miles, not true. Thats what the oil companies want you to believe so they make more money. Todays synthetic oils are far superior than convential oils, and have much longer drain intervals. Just because oil is brown doesnt mean it has to be changed. And BTW, obviously none of you took a minute to even check out the motoroilbible website, because if you did, you would have seen that it only cost $9.80 now. Just because you walk into a store doesnt mean you have to buy something. You guys need to chill, and not be so close minded to what you think is the only way. I dont find your smart answers funny, just ignorant. Peace!


93 COBRA!

Ok explain that? :rolleyes:

89 S-10! 2000 SS! 2002 R1! LOL, geez. :D

Pretty proud of that Cobra eh? :rolleyes: :rolleyes:

1BAD89

THIS IS STANG SITE, NOT A SLOMARO SITE, ID CHECK WHATS IN THAT PIPE YOUR SMOKING.

To honest here guys, 93 Venomized brings up many good points about motor oil. I covered some of these in Mod Madness a week or 2 ago. Do a search, cause I don't want to get into the length of that post again :).

I'm curious 93VENOMIZED, why do you use a 0W30 oil. I have only seen that oil used in Northern Canada, Which even then a good 5W30 or 5W50 provides much better performance (IMO).


Although 93 VENOMIZED did come "unglued" rather quickly, I think some of you guys attacked this new member rather fast too.

Maybe we shoud start over again.

Welcome 93VENOMIZED. I hope your future posts are more pleasant than this one. :)

Just remember it is not good to show up and start preaching when you're fairly new. Members who have been here sometime and have a fair bit of experience themselves, like Mach 1 will get offended.

Believe it or not a poll done some time ago showed that the average age on this site is much higher than you'd think ;)

Whoa, like 3 posts while I was typing, man either I'm getting slower or this is one happening thread! :)

Lets all calm down!

No one's to be smoking crack on this site :)

95MUSTANGGT,

THANKS FOR YOUR BIT OF SUPPORT. I AGREE THIS THREAD GOT OFF ON THE WRONG FOOT, AND I GUESS I FLAMED IT UP A BIT, BUT I ONLY HAD GOOD INTENTIONS. I GUESS I GOT FRUSTRATED WHEN I COULDNT GET ANYONE TO EVEN LISTEN TO ME. AS FOR WHY I USE OW-30 SYNTHETIC, GO TO AMSOILS WEBSITE, WWW.AMSOIL.COM, AND READ ON. OFFERS THE BEST GAS MILEAGE AND PERFORMANCE FOR ANY CAR THAT REQUIRES 5W-30 & 10W-30. I GUESS BEING A ROOKIE, REALLY URKES PEOPLE IN HERE. I HOPE TO POST MORE PLEASANT TOPICS IN THE FUTURE.

PEACE!

1BAD89


I FIND YOUR COMMENTS OFFENSIVE. SOUNDS LIKE YOUR JUST A FRUSTRATED BOWTIE, WHO BOUGHT AN 89 STANG JUST TO GET ON THIS SITE. YOUR JUST JEALOUS, CAUSE ANY KNOWLEDGABLE AND INTELLIGENT STANG FAN WOULD LOVE TO HAVE A 93 COBRA, AND WOULD KILL TO HAVE ONE WITH 8K MILES. YOUR WANTED AT Z28.COM. WHEN ARE YOU GOING TO POST YOUR IROC PICS. I CANT WAIT.

I take great enjoyment that you find my comments offensive.:) Yup, your absolutely right! I just bought an 89 mustang to get on this site,:rolleyes: damn you really do know everything! :p LMFAO. I like mustang's alot, but I woudn't kill over a 93 cobra with 8k, especially when I can smoke one hardcore for ALOT less $$$, nice cars and all, but IMO cars are meant to be driven. I'd rather be driving my mustang & enjoying it, than to just let it sit there while I drive Subaru's around. LMFAOOA!;) If you want to talk up to me or whatever your lil heart desires, send me some private messages, and save the members, your lame crap. Have a good one. :cool:

You dont HAVE to do anything. Why did you think you had to change your oil at 3000 miles? Sounds like your the "misinformed" one, not the rest of us.

Wow, how educational! Did you read that in "The Oil Bible"? I guess thats proof enough for you.

Who said it "HAD" to changed because it was brown? Anyone?

Do you think its a good idea to change your oil when its dirty? I hope so, since your the only one educated on oil. So, if my oil is dirty at 3000 miles, do I HAVE to change it? Of course not.
I dont think too many people are quite that nieve.
Is it a good idea to change it because clean oil is better than dirty oil, even though it has not broken down or lost any of its lubricating properties?

Yes, it is. It removes dirt from you rengine. Thats a good thing. It would be best to change oil everyday if it was practical, for the sole reason that it has dirt in it. And guess what? Synthetic oil gets dirty also. There are claims it doesnt get dirty as fast (the real reason for the long change intervals, not because it doesnt "break down" as fast), as you were led to believe. I dont know if there is truth to the synthetics not getting dirty as fast or not. I guess its possible, but I would like to know exactly why. Can you explain it? Maybe you can look it up in the bible? What do you think?

Oil is best changed when it is dirty. It doesnt have to be, but it is a good thing, because oil removes dirt and contaminents from your engine. Its not going to "break down" . When does oil break down? 3000 miles? 5000 miles? 10,000 miles? 100,000 miles? 65,000 miles?

Come on, tell me when it breaks down so I know exactly when I should change it?

You said conventional oil breaks down as soon as you use it. I dont agree with you, but just for the sake of argument, why can a car run without an oil change for thousands and thousands of miles then? If it starts to break down as soon as I use it the first time, then it surely must be worn out beyond use by 60,000 miles, right? But guess what? That same car with the conventional oil that hasnt been changed in 60K is still running fine.

Oh well, maybe it hasnt broken down at all, but one things for sure. It sure is dirty. Maybe the dirt in the oil causes it to "break down"

Can you please explain what exactly oil "breaking down" is? Does it have a nervous breakdown? Does its molecular properties change? And if so, why? What does it really mean when a oil breaks down? Im so tired of hearing this "break down" which I believe is a marketing term, so maybe you can clear it up for me.

thanks

1BAD89


HOW OLD ARE YOU, CAUSE YOU SOUND LIKE A REAL SMFAH. SINCE WHEN ARE SUBARUS LAME CARS. I DONT HAVE TO PROVE ANYTHING TO YOU. MY COBRA HAS LOW MILEAGE BECAUSE ITS AN INVESTMENT A******! WHEN YOU GROW UP, YOU MIGHT LEARN THAT. I HAVE A 92 GT AND 2 LEGACYS. SO LMBAH!

93mustanggt

sounds like your interested in how this breaks down by all your questions. Do yourself a favor and spend the $9.80 and get the oil bible, its more than worth the price and you just might thank me for it. You can even get the first 20 pages free as a trial offer, then if your convinced you buy it. case closed.


peace!

When did I ever say Subaru's were lame cars?:confused: Angry oil god simma down. :( ;)

You treated us eariler like children, now YOU are the one acting like a little kid with some of your ignorant insults.

We dont like this kind of crap here, take it to the Corral, they feed on people like you over there.
Or better yet, go to stangnet where they will probably look up to you :rolleyes:

Let the whole oil Bible thing go! It ain't working. Most people like me come here to learn things but we won't be inclined to change oil brands or spend $10.00 on an oil bible because one member pops out of nowhere and decides "we need to get educated". Being a new member is just that and thats all anyone will take you for until your here awhile and prove that your a whirlpool of knowledge. The idea of having several opinions on this site is what makes it great and why I'm here. Storming in here and coming off as a salesman which you may be( I don't know) is not the way to get approval from your fellow members. I suggest starting over and coming out with a more subtle attitude. This is a great site and you will learn to appreciate it if you stick around.

Later, James;)

I think I already know the answers. The questions were to get your understanding of the matter.

I dont need or do I desire the Oil Bible, no matter how much it costs.

And there are similar papers all about oil available absolutely free on the internet.

tireburner-
You shouldn't have any problems if you switch from synthetic to regular. The problems arise when you mix different synthetics together.

93 VENOMIZED-
You need to understand that every few months, some new Amsoil seller shows up here and acts like he just discovered gold. Your replies to this thread sound very familiar, and we've all heard it more times than we ever wanted to.

I've conversed with numerous Amsoil sellers over the years, and I respect their opinions. I agree with as much as synthetics being superior, but I disagree when it comes to the frequency with which said oil should be changed. That's my right.

The members of this site have been well exposed to opinions similar to yours, so there's no need to act like you're the first. Welcome to the site. You've made your opinion known. I'd let it go from there if I were you.

Take care,
-Chris

Well said PKRWUD.

There's a lot of negative words flying around here boys! Lets all relax a bit.

93VENOMIZED, I am open minded enough to read such material, but I've paid enough for such information (an Engineering degree costs $$$) :)

While synthetic oil is much better than conventional, oil cleanliness is of utmost importance (I've seen $500,000 engines destroyed by mere dirt). The best test for synthetic oil is to try and start your car in -40 degree weather. Synthetic oil makes a HUGE difference.

Bottom line, change your oil at regular intervals :)

LOL
Look what happens when I go to work!
http://www.emotipad.com/emoticons/fart.gif

Ok, guys this has gone far enough. I've asked Mr 5.0 to delete this thread. Wither or not he decides to delete it is up to him.

My quesions have been answered by PKRWUD(btw thanks)


93 VENOMIZED: I think you got off on the wrong foot. I hope to see more of you posts under more plesant curcumstances.

Here at MustangWorks you don't have to own a 5.0, GT, or Cobra to be allowed to post. Hell you don't even have to have a Ford product(several GM memebers here, even a few mopar fans) to be welcome here. So just relax and enjoy it here

BTW, just a side note...but a car a investment....they were ment to be driven. No offense intended.

Posting decorum
 

Apparently the thread remained open - must have been a glitch.

As I close this thread (hopefully for the last time) let me add this note, as forum moderator.

VENOMIZED:

When you post on a thread and begin it by telling people they 'need a good school lesson' you insult our intelligence and you've just killed all chances you may have had at (a) convincing anyone of your point, and (b) being taken seriously.

For the record; we all know synthetic oil is superior to 'conventional, petroleum-based oil but it's also more expensive. Much more. Your preference for Amsoil is interesting but your attempt to force your choices on other people with a haughty 'I know best' attitude is destined for failure.

If someone wishes to spend the money to use synthetic oil but change it at 3,000 miles, that's their choice and none of our business - yours or mine.

If others, like me, choose to use conventional oil and change it (and filter) every 2,000 miles, that's my business.

Pushing books for sale on the internet and trying to claim one brand of oil is the 'best' (a subjective analysis for the most part) is not appreciated here and will be met with healthy scepticism. When name-calling is employed to push your point, as you engaged in, you'll be challenged, probably insulted and the end result will be that the thread will have to be closed.

You've wasted our time for the most part.

Think it through the next time you decide to 'educate' strangers on the internet and try using a more reasoned approach that doesn't begin by 'giving us a school lesson' about oil - or anything else.

A simple statement of what you've learned about oil, what you think about types of oil and what you prefer - and why, would suffice. Skip the ads for some book and snide comments on why anyone who doesn't have it is somehow not worthy of discussing the subject of oil.

We are. Maybe you are, too, but your choice to adopt a patronizing and ultimately insulting attitude on this thread ruined any chance you ever had of making your points. Too bad.

Take it as a school lesson you need to learn.