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They have different properties for thermal stability and friction/wear reduction, so I wouldn't fool around with it. There's more to oil than the winter/summer rating.

The owner's manual says full synthetic, so I'd stick to that. Blends are cheaper, but if they reduce the engine's life or performance you're not saving anything in the long run.
 

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Stick with the manufacturer's recommendation. Synthetic.
 

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DO NOT experiment with this. Use the recommended oil. Failure to do so will likely result in the need to replace the very expensive multi air actuator.

Greg
 

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Can never rely on the sales guys as they're usually never properly trained and have full knowledge of the vehicles at all. Often enough when I go to inquire about a new car, I'm teaching the sales guys rather than them telling me anything I didn't already know
 

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Discussion Starter #7
Can never rely on the sales guys as they're usually never properly trained and have full knowledge of the vehicles at all. Often enough when I go to inquire about a new car, I'm teaching the sales guys rather than them telling me anything I didn't already know
Ding, ding, ding, you got that right. I realize it's a brand new model, but you would think sales people would know as much as possible about any product they're selling, whether it's cars or widgets. Frustrating when the customer has to inform the seller about things he/she should know.....:eek:
 

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I have the same engine in my Alfa and they are very strict about the particular oil used, I can't see FIAT being any different. Just pick up a 5 litre pack at the dealership for top ups
 

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In my experience, in turbo'd cars, the oil is used to cool the turbo, and as such gets very, very hot. Synth oil doesn't break down like regular oil does at those temps. using regular oil means that it breaks down much sooner and causes oil related failures. You could probably go for 40 or 50k miles without issues (following regular oil changes), but then you would probably have a turbo go bad, or your VVT stop working correctly...
 

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In my experience, in turbo'd cars, the oil is used to cool the turbo, and as such gets very, very hot. Synth oil doesn't break down like regular oil does at those temps. using regular oil means that it breaks down much sooner and causes oil related failures. You could probably go for 40 or 50k miles without issues (following regular oil changes), but then you would probably have a turbo go bad, or your VVT stop working correctly...
This is a good post.

The turbo does put a lot of stress on the oil. Additionally the very expensive MultiAir unit has some tiny passages, and oil supply through there is critical. Typically, incorrect oils cause failures in the MultiAir unit first. Some people had to learn this the hard way when the 500s came out. Hopefully the 124 crowd doesn't need to learn this the hard way and will take the lessons learned in the 500 world to heart.

Greg
 
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