some advice required
 

I have a 2010 jeep wrangler sport 17000 km ,first oil change away from a chysler
garage and the shop recommended a not a full synthetic oil and a regular filter,next oil change 10 0000,does this sound OK

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...can you clarify this?

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they said it was not a regular oil but half way between ,closer to a synthetic
i will have to get the name

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I looked up the invoice and it says semi synthetic oil

in fact i looked it up Semi Synthetic Oil - QuakerState.com‎

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i know some newer synthetics claim you can go further between oil changes, but i would still change it every 5,000 if it was my rig. especially if you work it hard. this is just my opinion though... my logic says the cleaner the oil, the cleaner the engine, the better it works...

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I agree ,sort of wished i would have insisted on regular oil

thanks for the advice

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No worries Bud.. You will be fine.. Look at your maintenance schedule, oil change every 10,000KLM with regular oil and filter. With semi syn you just got a little more protection. We have 6 Chrysler products all on 10,000klm oil change intervals. There is absolutely no reason to change oil sooner then factory spec unless the vehicle sees very little use and/or used on very short drives where the engine doesn't heat up enough to evaporate condensation/moisture in the oil..

We run Amsoil in 2 of the Jeeps and regular oil in all the other vehicles.

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i have been running my 2010 JKU with regular oil every 10K and no issues in performace... I run mostly highway... however do the occasional offroad... I'm not over 130K and have it running well... same fuel economy as when almost new... I have run Synthetic through twice... at 50K and again at 100K... just for giggles... but didn't notice any differences.

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I just read an article in a jeep magazine at my dealer regarding regular and synthetic oil.
They suggest either oil for the jeep, and even flip flopping from one to the other won't hurt occasionally - just don't do it too often. However if you prefer to use synthetic, then stick with it as the benefits it provides will only then be realized.

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My work van gets a change about every 30,000KM. It has 242,000KM on the odometer and runs like nearly new.
That being said, it is a good idea to try to stick to 5000KM changes because the oil will remain cleaner. That is very important. The oil itself does not break down so it will provide lubrication when it is old BUT the additives do deplete and, it gets dirty. Not only does the oil have to lubricate but it also has to clean the engine. This is what makes the oil dirty (it cleans the engine and carries away the gunk, becoming dirty itself). If it is already dirty it can't pick up as much of the gunk so it begins to build up in the engine. The additives in the oil act as detergents, some help the gaskets stay younger longer and they help keep the oil's physical properties more consistent with change in temperature. Specifically viscosity, or in other words, how "thick" it is. So when they deplete out of the oil, so do all the benefits that they provide.
Synthetics oils are just that, synthetically made, so they are made just plain better. They have a smaller molecular structure so they flow better when cold. This is why synthetics have more consistent physical properties with temperature change. They flow better which means they lubricate better. This also makes them clean the engine better which is why you can go longer on an oil change. Also, because synthetics are man-made they can be made with specific properties for specific applications. When conventional oil is pulled from the ground, it kinda is what it is.

So what does this all mean? Unless you have a balanced and blueprinted high performance engine in your Jeep, you don't NEED synthetic. The average build or stock engine built by Chrysler will be fine with conventional oil. But, synthetics are simply better than conventional so you can usually extend your engine's life when using synthetics.
So changing your oil every 10,000KM won't necessarily damage or wreck your engine, the oil will still lubricate. BUT, changing every 5000KM is BEST because it keeps your oil cleaner which help keep your engine cleaner which helps extend your engines life.

Another note, some say that the natural minerals that are only in conventional oil are better for the gaskets. That is the reason for going back and forth between conventional and synthetic. Use synthetic in the winter for better oil viscosity in the cold and use conventional in the summer for the benefits of the natural minerals. NEVER mix the two though. They don't mix together and this is very bad news for your engine! Some semi-synthetics can be mixed with conventional but i wouldn't do that myself in my engine, just to play it safe.

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Thanks a lot Jeep84, that was very well explained. I've always liked to hear the "why", rather than just the "how" to do things. It sinks in better and stays there a lot longer...for me anyway.

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great post, jeep 84!

...especially for a first post! don't forget to swing by the introductions section and tell us a little about yourself. also if you have a chance, give sunday night chat a try... the more the better!

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Syn oil is better for your engine. It runs cooler, sticks better and lubricates a lot better!
That shop that sold you the half Syn is smoking you. Half & half is no better than regular Dino oil!
People say 'don't mix them' then sell you half & half! And tell you every other one. That's BS.
You can go from one to the other without issue, but why?
It was developed for racing engines and is the best oil you can buy. You can go 10k plus with Syn oil. Only drawback is the cost! But to protect your engine, use Syn oil.
Had a mechanic tell me one time ' Line up 10 motors and when I tear them down, I will tell you which ones used Syn oil' It is that noticeable.
Your Jeep, your choice.
But I use it in my 2011 Wrangler, wife's car and my Harley.

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Half & Half synthetic oil is not just synthetic oil and conventional that are mixed in a big pot at the factory... It is a synthetic oil that uses conventional as a base. Conventional is broken down to a "base" that is used to build a synthetic oil out of. That is why it will mix with conventional, because it is very similar on a molecular level.

You can switch from one to the other without any real negative effects, (because you have 4-6 liters of one and a fraction of a liter of the other floating around in there that will kinda mix and flush out, not like a 2L/3L mix) but it is recommended by many shops to flush when changing from one to the other. This is expensive because you are basically doing 2 oil changes at the same time, so it is easier and cheaper to just drain as much as possible before switching. Synthetics off the shelf I believe are made to kinda mix for this reason. Correct me if I am wrong please, but I believe Mobile 1 claims their full synthetic can be blended with any type of oil. I wouldn't in my vehicle though. Pure synthetic or pure conventional...you don't want to top up with synthetic when you are a pint low with an engine full of conventional or visa versa.

In a racing engine that costs $100,000+, (and rebuilt after every race) You want to be very specific and careful with what you put into it, In a $3000 Chrysler engine, it is not so important. It is not built to the same specifications. Your cheap garden variety engine is pretty forgiving. So a little mix and match is not really noticed.

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last time i checked, i had a cheap garden variety engine under my hood...lol i think i'll be just fine without the expensive synthetic oil.

i always thought the true test of an oil's quality was the ability to retain its viscosity over time. if you were rebuilding a race engine after every race, you are always using new fluids, so maybe it boils down to the oil's ability to keep things clean and well oiled?

my father was a tractor puller for many years, his motor was a 454 chevy that was tweaked to deliver around 800hp. he would use regular quaker state oil and would change it after each weekend of pulling. the oil that came out of it was still so clean he would reuse it in his truck, the wife's truck, and anything else he could put it in...lol those pulling tractors are working under HUGE loads albeit for a short period of time (compared to racing) and it held up just fine.

-all this to say, if you are meticulous with your maintenance, what real difference does it make to use synthetic over regular motor oil?

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I'll just reinterate that Syn oil is better for your engine. It was developed for the racing guys because it reduces engine heat and lubricates better than dino oil. We have been using dino oil for 100 years and motors have running and doing work.
But the fact remains that motors have been breaking down for 100 years as well. The motor of today is a different animal than the motors in the past! Even recent past.
Far more sophisticated and higher tolerances.
You can use dino oil and change every 3 - 5000kms and you will probably be fine.
But, the real enemy of an internal combustion motor is heat. And Syn reduces heat in a motor substantially. And it lubricates better. Sticks better and lives longer in your engine.
All this means is that it reduces wear and damage in your motor.
Yes it costs more, but you don't have to change as often. So essentially you will save money!

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good points. thanks for the info.