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Old 05-26-2009, 11:49 AM
 
1,730 posts, read 6,227,345 times
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We’ve been putting synthetic in our cars. But my wife got the oil changed at Jiffy Lube and forgot to tell them to put synthetic in. Is it going to hurt the car to go back to regular from synthetic? Thanks in advance.
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Old 05-26-2009, 12:06 PM
 
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No, but next time I would use synthetic. And only go 3k or so with dino in there.
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Old 05-26-2009, 01:22 PM
 
Location: Chicago
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Not only will it not hurt the car, but synthetic is a waste of money in most cases. Unless your car has a high-strung engine with very tight tolerances and the manufacturer recommends synthetic (Corvette ZO6 for instance) or it has a turbocharger, I wouldn't bother with it. A possible exception might be if you live in a cold-weather climate, then synthetic can make cold-weather starting easier. In the middle of the summer... forget it, go with standard dino oil.
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Old 05-26-2009, 01:33 PM
 
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Quote:
Originally Posted by coolcats View Post
We’ve been putting synthetic in our cars. But my wife got the oil changed at Jiffy Lube and forgot to tell them to put synthetic in. Is it going to hurt the car to go back to regular from synthetic? Thanks in advance.
You're fine.
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Old 05-26-2009, 01:34 PM
 
21 posts, read 216,701 times
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Originally Posted by Drover View Post
Not only will it not hurt the car, but synthetic is a waste of money in most cases. Unless your car has a high-strung engine with very tight tolerances and the manufacturer recommends synthetic (Corvette ZO6 for instance) or it has a turbocharger, I wouldn't bother with it. A possible exception might be if you live in a cold-weather climate, then synthetic can make cold-weather starting easier. In the middle of the summer... forget it, go with standard dino oil.
Synthetic will actually lubricate a little better. But a synthetic blend will do just as well - unless, as you point out, you're in an extremely cold climate in the winter.
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Old 05-26-2009, 01:38 PM
 
8,562 posts, read 16,695,385 times
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Originally Posted by Drover View Post
Not only will it not hurt the car, but synthetic is a waste of money in most cases.
I disagree. Most good synthetics can go double or triple the time between change over a comparable dino oil without breaking down. If someone drives a lot per year this can save them time and equal out in terms of $$.
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Old 05-26-2009, 01:48 PM
 
Location: Chicago
38,691 posts, read 79,157,906 times
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Yes, synthetic will lubricate "a little better." But the benefits from that a-little-better lubrication in terms of longevity and even extended oil change intervals do not outweigh the extra cost of synthetic oil.
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Old 05-26-2009, 01:51 PM
 
Location: Chicago
38,691 posts, read 79,157,906 times
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Originally Posted by wheelsup View Post
I disagree. Most good synthetics can go double or triple the time between change over a comparable dino oil without breaking down. If someone drives a lot per year this can save them time and equal out in terms of $$.
Right, like I said, in "most cases" as opposed to the outlier scenario you provide. But even in your outlier scenario, it may not be the case. There is ample evidence even from high-mileage vehicle fleets (where every dollar matters) that the benefits of synthetics are not sufficient to recapture the higher cost. The bottom line is your average Joe driving an average-Joe car back and forth to work does not need synthetic.
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Old 05-26-2009, 02:10 PM
 
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Thanks everyone. Maybe I'll go dino from now on.
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Old 05-26-2009, 02:37 PM
 
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All oils lubricate - use the correct weight and your good to go. Synth oil doesn't shear down like dino oil will over time, so it lasts longer, but for the cost and the fact that you still need to change the oil filter, you might as well just go with dino oil.

No one has ever heard of an engine that seized up because it ran dino oil instead of synth oil. The fact is, today's maintained engine will outlast the car its in.
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