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Does expensive synthetic motor oil pay off in the long run?

By Jim Travers, Consumer Reports

By Exhaust Notes Aug 10, 2012 9:34AM

 

 

 

 

 

 

 

 

Note: Consumer Reports has no relationship with any advertisers on MSN.

 

We noticed an interesting tidbit during research forr our story on how to make your car last 200,000 miles. While reaching out to respondents to our Annual Auto Survey for tips and scouring our car forums, we found that many readers said they use synthetic motor oil exclusively in their keeper cars. And keep them they do, with many reporting accumulated miles far exceeding 200,000.

 

Of course, many other readers report similar longevity from their vehicles with conventional motor oil. The key is to stick with regular oil changes as stipulated in their owner's manual or service when called for based on an in-car indicator (aka service minder), a function that is increasingly common through the wonders of technology.

 

Synthetic motor oil costs more than the conventional stuff, but the less frequent oil changes that you get with synthetics can offset the cost. And do-it-yourselfers point out that buying in bulk can further the savings. Synthetic is said to stand up better to higher temperatures, thus reducing engine wear. (See our guide to car maintenance.)

 

We've heard from drivers on both sides of this slippery coin. But regardless of what oil you choose, stick to the maintenance schedule in your car's manual, and the odds are good it'll stick with you for 200,000 miles and beyond.

 

 

Read more at Consumer Reports:

 

5 tip-offs to mechanic rip-offs

Save hundreds on car maintenance

How to make your car last 200,000 miles

 

 

 

22Comments
Aug 10, 2012 2:43PM
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The true comparison is obvious to any chemical engineers that realize that the synthetic lubricants far exceed the capabilities of traditional petroleum based lubricants. So if you value your engine and want to keep it long term with minimal wear, the synthetic lubricants are definitely worth it. However if you keep a vehicle for 5 years or less then stick to the old petroleum based stuff. Most in the know prefer synthetic brake fluid, gear oil and motor oil if they plan on keeping their jewel long term. 
Aug 10, 2012 10:13AM
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The article fails to mention that synthetic oil also lubricates your engine better during cold starts, this creates less engine damage when cold starting and adds longevity to the engines life.
  It pays to use synthetic oil since it does not break down like non synthetic oil, it only needs to be replaced because it gets dirty. Standard oil breaks down and loses its viscosity as well as getting dirty. This breakdown is why you have to change your oil  more often when using a non synthetic product.
  Synthetic products cost more but reduce how often you have to change your oil, protects your engine better at start up and increases the longevity of the engines life.
  If you are only going to drive the vehicle for a few years or say 100,000 miles then it doesn't pay to use the more expensive synthetic oils, but if you plan on keeping that vehicle for a long time, using a synthetic product is a no brainer.
  I have never had to replace an engine or have a rebuild from engine wear in any motorized item that I own, or have owned, or take care of in my fleet. This includes, ATV's, motorcycles, cars, trucks, boats, lawn mowers and more.
  As the article states, performing your routine maintenance at the recommended intervals is important but synthetic oil gives you even more protection.

Aug 12, 2012 11:39PM
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the thing is on older engines there is no need to upgrade to synthetic if you never used it. on the never cars coming out with the vvt and cvt which are smaller engines with much tighter tolerances a synthetic is far superior then conventional. most manufactures with newer cars with what they consider "eco " engines either highly suggest it or required it to maintain warranity. i actually am an automotive tech and i can tell you there is a difference in how cars preform on synthetic oil. for one when gas is burned in the engine the molecules try to recombine with the conventional oil as for they are made from the same thing and share the same properities. that in returns breaks down the oil creating sludge. with syntheic it has different molecules properities that prevents the vapor from the gas reforming with the oil therefore it is recirculated via the egr valve/system back into the intake to mix again with air and fuel to be reburned which increases gas miliage. and lets not forget the reduction of engine temp , cooler running engines are able to have more out put in power there for it is more thermal efficient. i hope this help with the debate. good luck

Aug 12, 2012 4:54PM
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I use synthetic in everythng. I was 1st clued into it when my highly modded 95" Harley was running warm in traffic, even after an oil cooler. I switched to synthetic and my 106hp engine dropped 15-25 degrees. I undertsand the old hot rodders adage that says "The top of the engine wants to be in the frezzer, and the bottom in the oven". Cold air in, but make sure your oil is warm, but not overly hot. IMHO, Synthetic keeps a much more consistant temp as it flows through different parts of the engine. And even in water cooled engines, it survives better if the temp spikes while towing, or if you happen to run it a quart low. The oil that I take OUT of my engines, looks almost as clean, as most conventional oils going IN.
Aug 12, 2012 7:02PM
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I have a '93 Ford Explorer with 351,000 miles on it. I only used synthetic oil from 100,000 - 200,000 miles then I went to oil for vehicles over 75,000 miles. My SUV runs great and have never had any engine problems. By the way I only change my oil every 5,000 miles.
Aug 12, 2012 2:31PM
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As mentioned, the real key is regular oil changes. I change my oil and filter at 4k miles.I commute 75 miles daily. I use conventional oil, and my 2000 Taurus had 220,000 miles on it. The car went away for rust and mega brake problems. My 97 Escort had 197,000 miles on it, ran fine, rusted dead. No synth for either, do your oil changes.

pepe

ps., nothing against snth oil, just  don't reall y need it.
Aug 10, 2012 11:57AM
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For my piston engined cars, I only use light weight synthetic oil.  In the case of my Acura that is 5W-30.

For my rotary RX-7, I only use straight conventional mineral motor oil.  I would have to look up the weight.  And it has to be changed promptly at 2500 to 3000 miles.  Yes, there is a very good reason that I treat the rotary differently.

Aug 12, 2012 1:29PM
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Yo Frostyross, AMEN

The only vice I have is changing my oil to often, but then use the old oil in 15 year old mowers and such.

The dam mowers are out lasting my cars and bikes.

Anyone know of an oil related failure lately?

Don't know of a bad oil.

 When shopping for oil the most importaint thing to remember IS ,is it slippery?  A ha

 

Aug 12, 2012 12:18PM
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I use multiple viscosity 5w-30.  I drive one card about 5000 miles and the other 3000 miles per year.

I called Mobil 1 and they still recommend changing your oil annually. That makes it very pricey.

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